论文部分内容阅读
１９８８～１９９３年对黑龙江省２８个市县进行调查；玉米青枯病发生普遍，一般发病率５～２０％，严重地块达５０％以上，主产区发病重，主栽品种较大多数高度感病。发病程度除与品种、气象条件有关外，还与灌水，播种时期，密度，播种方法等栽培措施关系密切。土壤中施用氯化钾可减轻玉米青枯病发生程度，感病品种尤为明显，随着钾肥施用量增加，可减轻发病率２５．６～４４．５％，以１５公斤／亩为最好，施用氯化钾可提高玉米产量，增加茎高，茎粗，茎秆强度，是综合防治一项主要措施。
From 1988 to 1993, 28 cities and counties in Heilongjiang Province were surveyed. The incidence of corn bacterial wilt was common, with the general incidence of 5-20%, the mass of block reaching over 50% Sick In addition to the incidence of species, weather conditions, but also with irrigation, sowing time, density, planting methods and other cultivation measures are closely related. The application of potassium chloride in soil could reduce the degree of occurrence of corn bacterial wilt. The susceptible varieties were especially obvious. With the increase of potassium application rate, the incidence rate of 25.6 ~ 44.5% could be reduced to 15 kg / Application of potassium chloride can increase corn yield, increase stem height, stem diameter, stem strength, is a major integrated control measures.