稻鸭共育生态效应及经济效益

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。通常,20d左右大的鸭子按225只.hm-2放入移栽不久的稻田。由于取食和活动,它们能够帮助控制田间杂草、虫害、甚至病害,并且对水稻生长发育、土壤理化性状、水体溶氧量和微生物等产生一定的影响。本文概述了稻鸭共育的生态效应和经济效益的研究进展,并指出应加强在精确施肥和水稻后期病虫害防治等方面的深入研究。

Ecological effects and economic benefits of rice-duck farming

Rice-duck farming is a low-cost eco-agricultural technique with no herbicides and less insecticides application. In general, 20 day-old ducklings are released into recently transplanted rice fields at a density of 225 ducks per hectare. Their feeding and moving could help the control of weeds, insect pests and even plant diseases in the fields, and have definite effects on rice growth, soil characters, and oxygen content in field water. This paper reviewed the ecological effects and economic benefits of rice-duck farming, and suggested that the studies on precision fertilization and rice later growth stage pest management should be strengthened.