摘要
在红壤旱地进行了玉米、大豆间作生态系统的田间试验,并对试验结果进行了分析。分析结果表明,相对于单作生态系统而言,间作生态系统具有明显的减灾效应,具体表现在3个方面:一是提高土壤含水量,降低系统白天的温度,减缓温差,从而增强系统的抗旱能力;二是减轻病虫害,并且能增加天敌数量;三是抑制农田杂草的发生、发展,减轻杂草危害。研究结果认为,在红壤旱地推广该间作种植模式,可减轻灾害,减少农药使用量,保护红壤旱地生态环境,促进农业的可持续发展。
The field experiment results of ＂Maize Ⅱ Soybean＂ Intercropping ecological system on upland red soil show that intercropping ecological system develops less disaster than sole cropping system. Intercropping system can, firstly, improve soil moisture, lower daytime temperatures, therefore enhancing the system＇s drought resistance; Secondly, reduce plant disease and pests and increase the numher of natural enemies; Thirdly, inhibit the occurrence and development of weeds, and alleviate the endanger of weeds.
出处
《气象与减灾研究》
2006年第4期31-35,共5页
Meteorology and Disaster Reduction Research
基金
国家教育部科学技术重点资助项目-红壤旱地农业生态系统的结构创新与模式优化研究(03067).
关键词
红壤旱地
间作
生态系统
减灾效应
Upland red soil ,Intercropping,Ecological system ,Effects on disaster reduction.
