论文部分内容阅读
我省近年来的农业实践证明,实行粮粮、粮棉间套复种,是夺取粮棉双高产的重要途径。但是,事物总是一分为二的,在新的种植环境下,作物病虫害的发生、为害也相应变化,给粮棉增产带来了新问题。特别是在秋季钻种的情况下,小麦丛矮病、玉米粗缩病(群众统称“坐坡”)的发生为害逐年上升,已成为当前粮食增产的严重问题。一、小麦丛矮病发生发展和为害的严重性小麦丛矮在1972年以前,仅在我省局部地区的地头田边零星发病,不被人注意。从1972年以后随着间作套种的发展,该病迅速蔓延,到1974年全省普遍发病,尤其间作钻种的冬小
In recent years, our province’s agricultural practice has proved that the implementation of grain and grain and cotton intercropping is an important way to seize the double yield of grain and cotton. However, things are always divided into two parts. Under the new planting environment, crop pests and diseases also change correspondingly, which brings new problems to grain yield and cotton yield. Especially in autumn drilling, the incidence of wheat bushy dwarf disease and maize sickening disease (mass collectively referred to as “siting”) has risen year by year, which has become a serious problem of current grain yield increase. First, the occurrence and development of wheat clump dwarf disease and the severity of wheat Cong Cong dwarf in 1972, only in some areas of our province sporadic edge of field edge, not be noticed. Since 1972, with intercropping intercropping development, the rapid spread of the disease, the province in 1974 the general incidence, especially intercropping drilling winter