论文部分内容阅读
土壤缺钾引起水稻缺钾赤枯病(以下简称赤枯病),是一种生理病害。近年来赤枯病面积逐年扩大.危害程度日趋严重。据我县1979年土壤普查结果,有15.8万亩土壤严重缺钾,占耕地面积82%;1981年水南公社井垄大队1657亩早稻,有1157亩发病,占早稻面积的69%,反映出土壤缺钾的严重性。经试验证明:增施钾肥有防病效
Soil potassium deficiency caused rice potassium deficiency (hereinafter referred to as the disease), is a physiological disease. In recent years, the area of brown plant disease has been expanding year by year, and the degree of harm is becoming more and more serious. According to the results of the 1979 census of our county, there were 15.8 million mu of soil with a serious shortage of potassium, accounting for 82% of the arable land. In 1981, the southwestern Gonglou Brigade 1657 mu of early rice had 1157 mu of disease, accounting for 69% of the area of early rice, Severity of potassium deficiency in soils. The test proved that: increased potassium has anti-disease effect