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本试验利用稻萍鱼生态体系,引度、助迁天敌,控制病虫害的侵染,以达到防治病虫害的目的.一、材料与方法1.小区试验:在稻—萍—鱼体系中设小区,每区3.5米~2.重复三次.水稻株行距20×20厘米,在6丛中开33厘米深的纵向的避药沟(鱼的安全沟).水稻移栽后7～10天放萍,以盖满水面为准,投放3厘米长的鱼苗.每平方米
In order to achieve the purpose of pest control, this experiment uses the paddy-duckling ecological system, the quota, the natural enemies to assist migration, and the control of pests and diseases to achieve the purpose of pest control.Material and Methods 1. Community test: Each district 3.5 m ~ 2. Repeated three times .Willow spacing of 20 × 20 cm, 6 cm in the open 33 cm deep vertical ditch (fish safety ditch.) Rice transplanting 7 to 10 days after the release of Ping, To cover the surface of the water, put 3 cm long fry. Per square meter