水稻云形病的研究

Research on Rice Clouds Form Disease

介绍了水稻云形病的病原特征、侵染循环、发生规律和危害症状,提出防治该病应选用无病种子和抗病良种;收割后及早将病稻草清理,搬离田间堆放,作牛栏的垫草应堆沤腐熟后才能当肥料使用;采用配方施肥技术,合理施肥,防止偏施氮肥,增施磷钾肥;浅水灌溉;栽培密度不宜过大。另外在加强栽培管理,提高植株抗性的基础上,采取生长期喷药保护为重点的综合防治措施。为减轻水稻云形病的危害,提高水稻的产量和品质提供了一定的依据。

Causes and signs of rice clouds form disease were introduced as well as its infection cycle, occurrenee laws and damage symptoms.Control measures include selecting healthy and disease-resistant seeds; removing diseased straws timely after harvest, using the straws as fertilizer only after full fermentation; using formulated fertilization technique, applying nitrogenous, phosphorus and potassic fertilizer reasonably; shallow water irrigation; keeping moderate density. Moreover, the comprchensive prevention measures were proposed on the basis of strengthening cuhivation managements to improve disease-resistant ahility of rice, anti adopting fungicide control in the growth phase as key measures. The study provided a support for relieving damages of rice clouds form disease, improving yiehl anti quality of rice.