摘要
通过对在中等发病田块感染稻曲病的杂交水稻,在水稻穗期不使用任何杀菌剂的情况下,进行了稻曲病田间病情调查和室内考种;并对这两项结果进行分析比较和数据统计。结果表明:每穗病粒数与千粒重、穗实粒数及穗重之间存在着极显著的负相关(相关系数依次为-0.9663、-0.9036、-0.9723),与秕粒率存在着极显著的正相关关系(相关系数为+0.8965);并且根据穗重损失率病情分为6个级别,并在此基础上对稻曲病造成的产量损失进行了初步的测定。
The field patient's condition debate and indoor study were carried out in a secondary diseased hybrid rice field which has infected of rice false smut (RFS) and without using any germicide in the period of the ear. The result after analysis and data statistics shows that the quantities of diseased grain per ear are very significance negative relation to the weight of thousand grain, the quantities of plump grain and the weight of ear; and very significance positive relation to the incidence of not plump grain. According to the incidence of loss of the weight of ear, the patient's condition may be divided into 6 level. On the basis of these the initial determination was carried out of the output loss which caused by RFS.
出处
《上海交通大学学报（农业科学版）》
2003年第2期152-155,共4页
Journal of Shanghai Jiaotong University(Agricultural Science)
基金
上海市嘉定区科技发展基金资助项目(99JKK010)
关键词
水稻
稻曲病
分级标准
产量损失
rice false smut (RFS)
divided standard
output loss
