CHEN Yi-bing,LIN Chao-wen,HUANG Jing-jing.Study on Synthetical Benefit of Alley Cropping and Potassium Application[J].Research of Soil and Water Conservation,2006,13(03):47-49.
经济植物篱和增施钾肥综合效益研究
- Title:
- Study on Synthetical Benefit of Alley Cropping and Potassium Application
- Keywords:
- potassium application; alley cropping; system energy
- 分类号:
- S143.3;S181
- 摘要:
- 采用能量分析的方法研究了坡耕地植物篱和施钾对土地生产力的影响，研究结果表明“经济植物篱+横坡种植”模式减少水土流失66.0%，耕地生产系统产出能提高17%，输入能总量增加50%，有机输入能增加117.6%，提高耕地光能利用率17.6%；作物系统的能量产投比提高16.1%；在作物生长中后期，提高花生叶面积指数和甘薯叶面积3.8%和10.2%。植物篱结合钾肥情况下，分别提高花生叶面积指数和甘薯叶面积6.3%和22.4%，产值增加38.3%，纯收入增加46.6%，产投比增加20.9%，劳动生产率增加20.3%。钾肥和植物篱之间存在显著正互作效应。
- Abstract:
- The effect of hedgerow and K application on land productivity on sloping lands are studied by using energy analysis.The result shows that cropping system of "hedgerow+contour cultivation" reduces soil and water losses by 66.0%, while output energy, total input energy, organic input energy and efficiency of light energy utilization of system increases (17.0%), 50.0%, 117.6% and 17.6%, respectively.The energy input-output ratio of cropping system increases 16.1%.During the middle and later growing stage, the leaf area of groundnut and sweet potato increases 3.8% and 10.2%, respectively.Potassium application based on alley cropping improves the growth of crops, the leaf area of two crops increases 6.3% and 22.4%, respectively, and value 38.3%, net return 46.6%, inputoutput ratio 20.9%, labor productivity 20.3%.Therefore, there is significant positive interaction between alley cropping system and potassium fertilization.
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备注/Memo
收稿日期:2005-6-12
基金项目:国家“973”项目（项目编号：2006CB100200）
作者简介:陈一兵（1960- ），男，四川成都人，研究员，主要从事农业环境保护研究。
通讯作者:林超文（1968- ），男，四川资中人，副研究员，主要从事农业环境保护研究。