水稻多品种混合间栽控制稻瘟病研究

根据水稻品种的各种性状,选配了4个组合进行试验,结果表明,水稻品种多样性混合间栽对稻瘟病有较明显的控制效果,防效在11.36%～46.6%间,其中常规高秆感病品种表现突出,防效在19.4%～46.6%间,杂交矮秆品种防效在11.36%～37.6%间。混合间栽同时还有一定的抗倒伏与增产效果,每公顷可增产231.6～954.0kg,增产幅度为2.1%～9.3%。

Effects of the Mixture Interplanting of Rice Varieties to Control Rice Blast

The plot experiment of four combinations of mixture interplanting depending on the traits of different rice varieties was carried out in Hanzhong,Shaanxi province The results indicated that the rice blast could be dominated by the nixture interplanting technique of different varieties The controlled effect of the technique was generally 13 36%-46.6%,which of the routine long-stalked varieties susceptible to the blast appeared a higher resistance to the disease the effect to control was 19.4%-46.6%,and the effect of hybrid vavieties of short-stalked appeared less,the effect to control was 11.36%-37.6%.The techniqueofmixture interplanting could also resist to lodging and increase yield at 231.6-954.4 kg/hm²,the percentage of increasing yield was 2.1%-9.3%.