论文部分内容阅读
粒黑粉病严重影响杂交稻制种的产量和品质,在实施药剂防治时,应把母本增减产率作为药剂防治效果的衡量标准;选用综合性能较好的药剂;确定最佳施药时期和次数;並根据粒黑粉病的发生规律,进行病情预测,确定防治重点。
Grain powdery mildew seriously affects the yield and quality of hybrid rice seed production. In the implementation of chemical agent control, the increase or decrease of female parent should be taken as the measure of the effect of chemical control. The best synthetic agent should be chosen and the best application Period and frequency; and according to the incidence of grain powdery mildew, disease prognosis, prevention and control priorities.