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https://www.readbyqxmd.com/read/29692101/-effect-of-long-term-application-of-npk-fertilizer-on-maize-yield-and-yellow-soil-nutrients-sustainability-in-guizhou-china
#1
Yan Ling Liu, Yu Li, Ya Rong Zhang, Xing Cheng Huang, Wen An Zhang, Tai Ming Jiang
A long-term fertilization field experiment was conducted to investigate the effect of nitrogen (N), phosphorus (P), and potassium (K) fertilizer on maize relative yield, yield-increasing effect and the changes of nutrients in yellow soil in Guizhou Province. Five fertilizer combinations were evaluated, including balanced fertilization (NPK) and nutrient deficiency treatments (N, NK, NP, and PK). The maize relative yield, contribution efficiency of N, P, K fertilizer application, sustainability index of soil N, P, K nutrients, and other indicators were measured...
November 2017: Ying Yong Sheng Tai Xue Bao, the Journal of Applied Ecology
https://www.readbyqxmd.com/read/29692100/-response-of-indica-rice-spikelet-differentiation-and-degeneration-to-air-temperature-and-solar-radiation-of-different-sowing-dates
#2
Ya Liang Wang, Yu Ping Zhang, Jing Xiang, Lei Wang, Hui Zhe Chen, Yi Kai Zhang, Wen Qian Zhang, De Feng Zhu
In this study, three rice varieties, including three-line hybrid indica rice Wuyou308 and Tianyouhuazhan, and inbred indica rice Huanghuazhan were used to investigate the effects of air temperature and solar radiation on rice growth duration and spikelet differentiation and degeneration. Ten sowing-date treatments were conducted in this field experiment. The results showed that the growth duration of three indica rice varieties were more sensitive to air temperature than to day-length. With average temperature increase of 1 ℃, panicle initiation advanced 1...
November 2017: Ying Yong Sheng Tai Xue Bao, the Journal of Applied Ecology
https://www.readbyqxmd.com/read/29692099/-effects-of-spraying-p-and-k-fertilizers-during-panicle-primordium-differentiation-stage-on-cold-resistance-yield-and-physiological-characteristics-of-early-rice
#3
Na Cao, Xiao Rong Chen, Hao Hua He, Chang Lan Zhu, Shuo Cai, Tao Xu, Heng Wang Xie, Fang Ping Liu
Super hybrid early rice variety Ganxin 203 was used as test material, and four foliar spraying treatments were set using clear water as the control group (CK), and 3 concentrations of potassium dihydrogen phosphate (KH2 PO4 ) with 0.1% (P1), 0.3% (P3), 0.5% (P5) and po-tash (MH). The effects of spraying P and K fertilizers on the leaf temperature, yield and physiolo-gical characteristics in double-season early rice under low temperature conditions during panicle primordium differentiation stage were studied...
November 2017: Ying Yong Sheng Tai Xue Bao, the Journal of Applied Ecology
https://www.readbyqxmd.com/read/29692098/-effects-of-moss-dominated-biological-soil-crusts-on-soil-enzyme-activities-in-water-wind-erosion-crisscross-region-on-the-loess-plateau-of-china
#4
Yan Feng Wang, Bo Xiao, Bing Wang, Shuang Ma, Xiao-Meng Yao
The 30-year-old biological soil crusts dominated by mosses (hereafter moss crusts) and corresponding uncrusted soil (hereafter no crust) were sampled on loess soil and aeolian soil at 0-12 cm depth on the Loess Plateau of China. Afterwards, the hydrolase activities of the samples were measured, and their correlations with soil physicochemical properties were analyzed. Compared with no crust, the activities of urease, alkaline phosphatase, invertase, and protease of the moss crusts were 2.4, 7.6, 20.7, 2.4 times higher on loess soil, respectively; while they were 3...
November 2017: Ying Yong Sheng Tai Xue Bao, the Journal of Applied Ecology
https://www.readbyqxmd.com/read/29692097/-spatial-heterogeneity-of-soil-moisture-of-mountain-apple-orchards-with-rainwater-collection-and-infiltration-rwci-system-in-the-loess-plateau-china
#5
Xiao Lin Song, Xi Ning Zhao, Xiao Dong Gao, Pu Te Wu, Wen Ma, Jie Yao, Xiao Li Jiang, Wei Zhang
Water scarcity is a critical factor influencing rain-fed agricultural production on the Loess Plateau, and the exploitation of rainwater is an effective avenue to alleviate water scarcity in this area. This study was conducted to investigate the spatial and temporal distribution of soil moisture in the 0-300 cm under a 21-year-old apple orchard with the rainwater collection and infiltration (RWCI) system by using a time domain reflectometer (TDR) probe on the Loess Plateau. The results showed that there was a low soil moisture zone in the 40-80 cm under the CK, and the RWCI system significantly increased soil moisture in this depth interval...
November 2017: Ying Yong Sheng Tai Xue Bao, the Journal of Applied Ecology
https://www.readbyqxmd.com/read/29692096/-effects-of-light-quality-on-leaf-senescence-and-endogenous-hormones-content-in-grapevine-under-protected-cultivation
#6
Hai Bo Wang, Shuai Wang, Xiao di Wang, Xiang Bin Shi, Bao Liang Wang, Xiao Cui Zheng, Zhi Qiang Wang, Feng Zhi Liu
Two grape varieties 'Italia' and 'Centenial seedless' cultured in protected and delayed cultivation were used as experimental materials to study the effects of red and blue light quality on chlorophyll content, net photosynthetic rate, and endogenous hormone content during leaf senescence. The results showed that the chlorophyll content and net photosynthetic rate of the grapes were significantly enhanced in the red light treatment. Although the content of endogenous GA3 was decreased, an increase in abscisic acid (ABA) content and a decrease of total content of zeaxanthin (ZR) were obviously slowed, which led to the significant increase in value of (GA3 +ZR)/ABA, delaying leaf senescence...
November 2017: Ying Yong Sheng Tai Xue Bao, the Journal of Applied Ecology
https://www.readbyqxmd.com/read/29692095/-effects-of-selenium-valence-states-and-application-concentrations-on-plant-growth-ascorbate-glutathione-cycle-in-citrus-junos-cv-ziyang-xiangcheng
#7
Xie Ping Sun, You Jin Luo, Guang Wen Zhou, Hong Wei Yi, Yuan Ping Chen, Zheng Wu, Yong Hong Xie
Potted Citrus. junos cv. Ziyang Xiangcheng seedlings were used to study the effects of selenium (Se) valence states (Se6+ and Se4+ ) on plant growth and antioxidants and antixodases in ascorbate(AsA)-glutathione (GSH) cycle. The results showed that Se6+ and Se4+ (from 1.0 mg·L-1 to 8.0 mg·L-1 ) stimulated the seedling growth by increasing plant height, leaf areas, and fresh or dry mass. Applying Se6+ significantly increased plant Se levels mainly in leaf, and applying Se4+ slightly increased Se content mainly in root...
November 2017: Ying Yong Sheng Tai Xue Bao, the Journal of Applied Ecology
https://www.readbyqxmd.com/read/29692093/-effects-of-enhanced-uv-b-radiation-on-photosynthetic-physiology-and-chloroplast-ultrastructure-of-phragmites-australis
#8
Run Chu, Nian Lai Chen
The effects of different intensities of UV-B radiation on photosynthetic characteristics, photosynthetic pigment content and chloroplast ultrastructure of Phragmites australis were studied in this paper. The results showed that enhanced UV-B radiation significantly reduced the net photosynthetic rate, stomatal conductance and transpiration rate, and the degree of degradation increased with the increasing irradiation intensity. The intercellular CO2 content increased and the photosynthetic efficiency decreased significantly compared with the control...
November 2017: Ying Yong Sheng Tai Xue Bao, the Journal of Applied Ecology
https://www.readbyqxmd.com/read/29692092/-effects-of-micro-fertilizers-foliar-spray-on-the-content-of-main-effective-components-of-angelica-dahurica
#9
Ya Qin Zhang, Zheng Ming Yang, Feng Shi, Ming Ming Dou, Liu Hui Ma, Yu Chen, Fei Yi Lei, Xing Fu Chen
The zinc, boron and molybdenum were sprayed on the foliage of Angelica dahurica du-ring the vigorous growth period to explore the effects of the combination of zinc, boron and molybdenum fertilizers on the content of main effective components of A. dahurica, and to find out the optimum spraying amount. The results showed that the application of zinc, boron and molybdenum foliar spray was beneficial to increase the content of imperatorin and total cumarin, whereas had no effect on the content of the isoimperatorin...
November 2017: Ying Yong Sheng Tai Xue Bao, the Journal of Applied Ecology
https://www.readbyqxmd.com/read/29692089/-effects-of-elevated-ozone-concentrations-on-reactive-oxygen-metabolism-and-related-gene-expression-in-ginkgo-biloba-leaves
#10
Ya Nan Ruan, Sheng Xu, Long Guo, Ming Zhu Zhu, Cong Wang, Shu Yuan Li, Hong Yan Wang
By using the open top chambers (OTCs) fumigation method, this paper investigated the changes of foliar injury, level of reactive oxygen species (ROS), activities and gene expression of antioxidant enzymes in Ginkgo biloba leaves under different ozone (ambient ozone≈40, 80, 160, 200 nmol·mol-1 ) concentrations, in order to study the effects of elevated ozone (O3 ) concentrations on reactive metabolism. The results showed that the obvious foliar injuries were observed in 160 and 200 nmol·mol-1 O3 treatments, while no visible injury was observed in 80 nmol·mol-1 O3 and ambient O3 treatments...
November 2017: Ying Yong Sheng Tai Xue Bao, the Journal of Applied Ecology
https://www.readbyqxmd.com/read/29692088/-sap-flux-density-in-response-to-rainfall-pulses-for-pinus-tabuliformis-and-hippophae-rhamnoides-from-mixed-plantation-in-hilly-loess-plateau
#11
Sen Bao Lu, Yun Ming Chen, Ya Kun Tang, Xu Wu, Jie Wen
Thermal dissipation probe (TDP) was used to continuously measure the sap flux density (Fd ) of Pinus tabuliformis and Hippophae rhamnoides individuals in hilly Loess Plateau, from June to October 2015, and the environmental factors, i.e., photosynthetic active radiation (PAR), water vapor pressure deficit (VPD), and soil water content (SWC), were simultaneously monitored to clarify the difference of rainfall utilization between the two tree species in a mixed plantation. Using the methods of a Threshold-delay model, stepwise multiple regression analyses, and partial correlation analyses, this paper studied the process of Fd in these two species in response to the rainfall pulses and then determined the effects of environmental factors on Fd ...
November 2017: Ying Yong Sheng Tai Xue Bao, the Journal of Applied Ecology
https://www.readbyqxmd.com/read/29692087/-fine-root-morphology-and-chemistry-characteristics-in-different-branch-orders-of-castanopsis-platyacantha-and-their-responses-to-nitrogen-addition
#12
Guan Tao Chen, Jun Zheng, Tian Chi Peng, Shun Li, Xi Rong Qiu, Yu Qin Chen, Hao Yu Ma, Li Hua Tu
Fine root morphology and chemistry characteristics of dominant species Castanopsis platya-cantha in an evergreen broad-leaved forest in subtropical China and their response to nitrogen (N) addition were determined in order 1st to 5th. With the increase of root order, C. platyacantha root diameter, tissue density (RTD), and K content increased, and specific root length (SRL), speci-fic surface area (SRA) and contents of N, P and Mg decreased. Nitrogen addition significant increased N content and decreased Mg content and C/N of fine roots...
November 2017: Ying Yong Sheng Tai Xue Bao, the Journal of Applied Ecology
https://www.readbyqxmd.com/read/29692086/-response-of-radial-growth-of-pinus-koraiensis-and-picea-jezoensis-to-climate-change-in-xiao-xing-anling-mountains-northeast-china
#13
Jian Yu, Qi Jing Liu, Guang Zhou, Sheng Wang Meng, Hua Zhou, Zhen Zhao Xu, Jing Ning Shi, Wen Xian Du
Based on dendrochronological methods, we established residual chronologies of Pinus koraiensis and Picea jezoensis, with the dominant species of broadleaved Korean pine mixed forest at low altitudes chosen as the research object, to identify the key climatic factors affecting the radial growth of the two species in Xiaoxing'anling Mountains, Northeast China. The results showed that the responses of the two species to climate factors were different, and P. koraiensis was more sensitive, and hence more suitable for dendroclimatological analysis...
November 2017: Ying Yong Sheng Tai Xue Bao, the Journal of Applied Ecology
https://www.readbyqxmd.com/read/29692084/-advances-in-the-studies-on-topographic-effects-of-vegetation-indices
#14
Hui Zhang, Ping Heng Li, Guo Mo Zhou, Yu Feng Zhou
Vegetation index is a key indicator for qualitative and quantitative assessment of green vegetation, which has been widely used in vegetation monitoring. Forests are often distributed in mountainous areas with complex topography, which is one of the main factors of accurate retrieval of forest vegetation information. Here, we analyzed the topographic effects on canopy reflectance using a geometric optical model. The responses of complete ratio vegetation indices [simple ratio index (SR), normalized difference vegetation index (NDVI) and moisture adjusted vegetation index (MAVI)], incomplete ratio vegetation indices [enhanced vegetation index (EVI) and soil adjusted vegetation index (SAVI)], non-ratio vegetation indices [reduced simple ratio (RSR), modified normalized difference vegetation index (MNDVI), greenness vegetation index (GVI)] and, topography adjusted vegetation index [topography adjusted vegetation index (TAVI)] to topography were discussed in detail, with the aim to provide reference for selecting vegetation index in complex terrain mountainous area...
February 2018: Ying Yong Sheng Tai Xue Bao, the Journal of Applied Ecology
https://www.readbyqxmd.com/read/29692083/-the-role-of-white-gene-and-its-mechanism-during-the-formation-of-curly-wing-in-drosophila-melanogaster
#15
Cheng Li Wu, Xin da Lin, Yan Yun Jiang, Shuai Shuai Meng
Curly wing is one of the most frequently used genetic markers in Drosophila melanogaster, but its molecular mechanism is remained unclear. Previous results have showed that physicochemical stimulation would affect the formation of the cruly wing. Our recent study found that H2 O2 could not only affect the eclosion rate of D. melanogaster, but also induce the formation of curly wing. Here, we aimed to uncover the specific factors influencing the formation of curly wing in D. melanogaster via changing the concentration of H2 O2 and the temperature as well as the time of H2 O2 treatment...
February 2018: Ying Yong Sheng Tai Xue Bao, the Journal of Applied Ecology
https://www.readbyqxmd.com/read/29692082/-double-ambient-co-2-concentration-affects-the-growth-development-and-sucking-behavior-of-non-target-brown-plant-hopper-nilaparvata-lugens-fed-on-transgenic-bt-rice
#16
Yong Qing Lu, Yang Dai, Xiu Ying Yu, Fu-Lan Yu, Shou Lin Jiang, Zong Yuan Zhou, Fa Jun Chen
In recent years, the two issues of climate change including elevated CO2 etc., and resistance of transgenic Bt crops against non-target insect pests have received widespread attention. Elevated CO2 can affect the herbivorous insects. To date, there is no consensus about the effect of elevated CO2 on the suck-feeding insect pests (non-target insect pests of transgenic Bt crops). Its effects on the suck-feeding behavior have rarely been reported. In this study, CO2 levels were set up in artificial climate chamber to examined the effects of ambient (400 μL·L-1 ) and double-ambient (800 μL·L-1 ) CO2 levels on the suck-feeding behavior, growth, development, and reproduction of the non-target insect pest of transgenic Bt rice, brown planthopper, Nilaparvata lugens...
February 2018: Ying Yong Sheng Tai Xue Bao, the Journal of Applied Ecology
https://www.readbyqxmd.com/read/29692081/-simulation-of-rainfall-and-snowmelt-runoff-reduction-in-a-northern-city-based-on-combination-of-green-ecological-strategies
#17
Jin Feng Han, Shuo Liu, Jun Dai, Hao Qiu
With the aim to control and reduce rainfall and snowmelt runoff in northern cities in China, the summer runoff and spring snowmelt runoff in the studied area were simulated with the establishment of storm water management model (SWMM). According to the climate characteristics and the situation of the studied area, the low impact development (LID) green ecological strategies suitable for the studied area were established. There were three kinds of management strategies being used, including extended green roof, snow and rainwater harvesting devices, and grass-swales or trenches...
February 2018: Ying Yong Sheng Tai Xue Bao, the Journal of Applied Ecology
https://www.readbyqxmd.com/read/29692075/-phosphorus-application-effects-and-input-threshold-of-chinese-cabbage-in-the-oasis-irrigation-region
#18
Cai Yun Lian, Zhong Ming Ma
To resolve the problem of higher application and lower use efficiency of phosphorus fertilizer of Chinese cabbage (Brassica pekinensis), the yield, use efficiency of phosphate fertilizer and soil phosphate balance were examined by a located field trial in Zhangye Observation and Experiment Station of the Agro-ecological Environment in oasis irrigation region from 2011 to 2013. The results showed that the yield increased with the increase of phosphorus fertilization rate from 0 to 112.52 kg P·hm-2 , beyond which there would be no further enhancement...
February 2018: Ying Yong Sheng Tai Xue Bao, the Journal of Applied Ecology
https://www.readbyqxmd.com/read/29692073/-effects-of-different-tillage-patterns-on-soil-properties-maize-yield-and-water-use-efficiency-in-weibei-highland-china
#19
Dan Liu, Xia Zhang, Jun Li, Xu-Dong Wang
An eight-year field experiment of straw returning was conducted on dark loessial soil in Weibei Highland to investigate the effects of tillage patterns on soil aggregate, soil organic carbon (SOC), corn yield and soil water use efficiency (WUE). There were six tillage patterns, including conventional tillage (CT/CT), no-tillage (NT/NT), subsoiling tillage (ST/ST), no-tillage/subsoiling tillage (NT/ST), conventional tillage/no-tillage (CT/NT) and conventional tillage/subsoiling tillage (CT/ST). The results showed that compared with CT/CT, the patterns of NT/NT, ST/ST and the rotational tillage patterns (NT/ST, CT/NT and CT/ST) decreased the mean mass diameter of soil mechanical stable aggregate...
February 2018: Ying Yong Sheng Tai Xue Bao, the Journal of Applied Ecology
https://www.readbyqxmd.com/read/29692072/-effects-of-short-term-granulated-straw-incorporation-on-grain-yield-and-soil-respiration-in-a-winter-wheat-summer-maize-cropping-system
#20
Li Zhang, Jing Wang, Huan Cheng Pang, Jun Tong Zhang, Jian Jun Guo, Guo Hao Dong
Direct straw return to soils often leads to poor combination between soil and straw, decreases straw decomposition and suppresses crop growth. Those problems hamper crop yield and its stability. Granulated straw with high bulk density and small volume improves the straw quality and the soil-straw combination. It remains unknown how does the practice influence soil carbon emission and grain yield. A micro-field experiment was carried out to investigate the responses of wheat and maize yields, soil respiration and soil carbon use efficiency...
February 2018: Ying Yong Sheng Tai Xue Bao, the Journal of Applied Ecology
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