نتایج جستجو برای: double cropping

تعداد نتایج: 250287  

2014
Hai-Ming Tang Xiao-Ping Xiao Wen-Guang Tang Ke Wang Ji-Min Sun Wei-Yan Li Guang-Li Yang Dafeng Hui

Residue management in cropping systems is believed to improve soil quality. However, the effects of residue management on methane (CH4) and nitrous oxide (N2O) emissions from paddy field in Southern China have not been well researched. The emissions of CH4 and N2O were investigated in double cropping rice (Oryza sativa L.) systems with straw returning of different winter cover crops by using th...

Journal: :Annual review of entomology 2006
A M Shelton F R Badenes-Perez

Interest in trap cropping, a traditional tool of pest management, has increased considerably in recent years. In this review we propose a broader definition of trap cropping that encompasses the inherent characteristics of the trap crop plants themselves as well as the strategies associated with their deployment. Inherent characteristics of a trap crop may include not only natural differential ...

2011
S. P. KAM T. P. TUONG C. T. HOANH N. V. NGOC V. Q. MINH

Rice is cultivated in the Mekong River Delta of Vietnam under various cropping systems and cultivation techniques, influenced largely by environmental conditions. This paper describes a study on the dynamic changes in rice cropping systems in response to changes in agro-hydrological conditions resulting from infrastructure interventions to prevent salinity intrusion. Multi-date cloud-penetratin...

Journal: :CoRR 2017
Debang Li Huikai Wu Junge Zhang Kaiqi Huang

Image cropping aims at improving the aesthetic quality of images by adjusting their composition. Most weakly supervised cropping methods (without bounding box supervision) rely on the sliding window mechanism. The sliding window mechanism requires fixed aspect ratios and limits the cropping region with arbitrary size. Moreover, the sliding window method usually produces tens of thousands of win...

Journal: :Renewable Agriculture and Food Systems 2022

Abstract Double-cropping winter rye cover crops (CC) with soybean in the North Central US could help global effort to sustainably intensify agriculture. Studies addressing management of these systems are limited. Therefore, a field study was conducted from 2017 2019 Iowa, evaluate CC biomass production, aboveground N accumulation, estimated economics, within-field energy balance and greenhouse ...

2014
Ji Chen Fengjuan Lv Jingran Liu Yina Ma Youhua Wang Binglin Chen Yali Meng Zhiguo Zhou Derrick M. Oosterhuis

Cotton-rapeseed or cotton-wheat double cropping systems are popular in the Yangtze River Valley and Yellow River Valley of China. Due to the competition of temperature and light resources during the growing season of double cropping system, cotton is generally late-germinating and late-maturing and has to suffer from the coupling of declining temperature and low light especially in the late gro...

The aim of this study was to assess the effects of strip cropping and different weed control methods on the yield and yield structure of dent maize, narrow-leafed lupin and spring oat. A split-plot design with four replications was conducted in 2008-2010. The following factors were analysed in the experiment: I. Cultivation method – sole cropping and strip cropping; II. Weed control method ...

2013
M. K. ALAM N. SALAHIN

A series of field experiments was conducted at BARI central farm to observe the changes in soil densities, moisture retentive properties, and crop productivity as influenced by different tillage depths and cropping patterns. The tillage depth showed significant effect on wheat yield. Grain yield of wheat significantly increased from 2.86 t/ha (minimum tillage depth) to 5.33 t/ha (tillage depth ...

2014
Toshichika Iizumi Navin Ramankutty

Most studies of the influence of weather and climate on food production have examined the influence on crop yields. However, climate influences all components of crop production, includes cropping area (area planted or harvested) and cropping intensity (number of crops grown within a year). Although yield increases have predominantly contributed to increased crop production over the recent deca...

2016
Lu Gong Guixiang He Weiguo Liu Marc A. Rosen

Agricultural sustainability has become a major concern in arid regions of China. In order to better understand the influence of continuous cropping on soil quality, six experimental fields were established in the Alar Oasis of Xinjiang, including uncultivated land (as a zero year treatment duration) and five different continuous cropping years on cotton fields, with different cropping durations...

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