水稻纹枯病在不同栽培方式稻田发生情况调查

2008年和2009年的早稻和晚稻分蘖盛期、孕穗末期-黄熟期对点播、撒播、强化栽培、插植、抛秧5种栽培方式种植水稻的稻田进行纹枯病发生情况调查。结果显示,纹枯病在不同栽培方式的稻田之间是有差异的,强化栽培稻田纹枯病的发病率和病情指数最高,抛秧稻田发病率和病情指数次之,插植稻田发病情况居中,点播和撒播稻田最低。五种栽培方式稻田在孕穗末期-黄熟期的纹枯病发病率和病情指数均高于分蘖盛期。调查研究建议,要做好预防工作,适时用药,合理种植密度,以期达到控制该病害的目的。

The Investigation of Rice Sheath Blight in Rice Paddy Cultivated by Different Ways

The rice shealth blight were investigated at active tillering stage and booting-ripening stage in early rice and late rice in 2008 and 2009,which cultivated by sowing,broadcast sowing,strengthen cultivation,transplant seeding and seeding-broadcast cultivation ways.The results showed that the disease incidence and disease index were both different in five cultivation ways of rice paddy.The disease in strengthen cultivation paddyfield was the most serious,followed by seeding-broadcast cultivation and transplant seeding cultivation,sowing and broadcast sowing were lowest.The disease incidence and disease index in booting-ripening stage in early rice and late rice were higher than active tillering stage for five cultivation.The research suggests that make prevention work,timely treatment,reasonable planting density to achieve the purpose of controlling the disease.