研究鸭子在稻鸭复合生态系统中对蜘蛛及病、虫、草害的影响。
The article studied the influence of ducks in a rice-duck complex ecosystem as well as its natural enemies and diseases, insects, weeds and pests.
稻鸭共育是一项无须使用除草剂和施用较少农药的低成本生态农业技术。
Rice-duck farming is a low-cost eco-agricultural technique with no herbicides and less insecticides application.
结果表明：稻鸭复和生态系统中甲烷排放具有明显的日变化规律和季节变化规律。
The results showed that methane emission had obvious daily and seasonal variation law in rice-duck complex ecosystem.
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