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水稻栽培制度的变革,改变了稻螟赖以生存的环境条件,导致二、三化螟的发生世代、发生型和为害程度发生了深刻的变化。本地单季晚稻区从开始发展双三熟制,到双三熟制稳定在100％的过程,螟害为由轻到重,由重到轻。显然,螟害程度的轻重,与稻螟的发生型以及水稻危险生育期是否与大量蚁螟活动期相配合有关。几年来的实践表明,采用合理的耕作制度:进一步提高良种纯度,加强田间肥水管理,促使稻株生育健壮,抽穗整齐:必要时再辅以少量药剂:确能控制稻螟的种群,使它稳定在低密度状态。
The transformation of rice cultivation system has changed the environmental conditions for the survival of rice borer, resulting in profound changes in the generation, occurrence and damage of the second and third generation rice borers. From the beginning of the development of single-season local rice cropping system from the beginning of double-triple cooked to 100% stability in the process of stem borer from light to heavy, from heavy to light. Obviously, the severity of borer damage is related to the occurrence of rice stem borer and the dangerous growth period of rice associated with the active period of a large number of rice stem borers. Years of practice have shown that adopting a reasonable tillage system: further improving the purity of improved varieties, strengthening the management of fertilizers in the field, and promoting the robust growth and heading of rice plants: if necessary, supplemented with a small amount of pesticides: it can indeed control the population of the rice borer and stabilize it At low density.