摘要
通过对汕优６３的纹枯病抗性和田间自然发病消长动态的观察，分析研究了其发病程度与产量损失的相关性；并从汕优６３抗性利用的试验示范中，总结出利用其自身的中等抗性控制纹枯病的危害，可减少施药次数，节约成本，是一经济而有效的途径．
The resistance to sheath blight (SB) of Shanyou 63 and the field invasion of the disease were surveyed and the correlation between infection of SB and yield loss was analyzed. The results showed that Shanyou 63 was of medium resistance to SB, and its resistance became effective in the medium-late growth stages. In general, the infecfion degree of SB was below grade 2, which had not much influence on grain yield. Through the demonstration of using the medium resistance of Shanyou 63 to control SB, it is concluded that the technique is effective, and it can decrease the times and amount of germicides applied.
出处
《杂交水稻》
CSCD
北大核心
1993年第3期38-39,共2页
Hybrid Rice
关键词
水稻
纹枯病
抗病性
品种
Shanyou 63
medium resistance
rice sheath blight
resistance utilization
