摘要
采用正交Ｌ８（４×２８）试验方法，研究不同抗、感杂优组合地优６４和威优６４混合播种栽培的控瘟性，结果表明对抑制穗颈瘟病指数下降４６．３２％～４７．１７％。大田示范控叶瘟、穗瘟效果分别达３３．３２％和３７．６６％，增产１３．９８％。
It was reported home and abroad that, the harm of rice blast can be controlled by mix-culture of various varieties. Mao Jianhui (1991) reported the rate of leaf blast decreased 74. 23 % and the disease index decreased 85. 30% while mix-cultulre method was carried out. The sogatells furcifera (Horvath) determinationL8 (4 × 28) was used for the study on controlling rice blast by using mix-culture of different combinations ofhybtid rice Di-you 64 (R) with Wei-you 64 (S). The results showed that the panicle blast indexes decreased46. 32 % ～47. 17 %. In the field demonstration, the leaf and penicle blast-controlling effects were 33. 32 %and 37. 66 % respectively, the yield increased 13. 98%.
