不同种植方式对水稻纹枯病发生的影响 联系客服

发布时间 : 星期一 文章不同种植方式对水稻纹枯病发生的影响更新完毕开始阅读a2452057ba68a98271fe910ef12d2af90342a846

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不同种植方式对水稻纹枯病发生的影响

作者:李颗 李向辉 文吉辉 黄志农 马国辉 来源:《湖南农业科学》2015年第10期

摘 要:在长沙县早稻种植示范基地开展了5种不同种植方式与纹枯病发生危害关系的研究。结果表明:水稻纹枯病发生危害程度为抛秧>手插>直播>机插(2种),其影响发病轻重的主要原因是种植方式的不同和密植程度的大小。 关键词:水稻;种植方式;纹枯病;发生危害

中图分类号:S435.111.42 文献标识码:A 文章编号:1006-060X(2015)10-0035-03 Effects of Planting Methods on Occurrence and Damage of Rice Sheath Blight LI Ke1,LI Xiang-hui1,WEN Ji–hui2,HUANG Zhi-nong2,MA Guo-hui3, 4

(1. Agricultural Sciences Institute of Changsha County, Changsha 410137, PRC; 2. Hunan Plant Protection Institute, Changsha, 410125, PRC; 3. China National Hybrid Rice Research and Development Center, Changsha, 410125, PRC; 4. Hunan Hybrid Rice Research Center, Changsha, 410125, PRC)

Abstract:The aim of this paper was to determine the effects of planting methods on the occurrence of rice sheath blight. We studied the relationship between the occurrence and damage degree of rice sheath blight and different planting methods in the early rice at Test and Demonstration Base of Changsha County. The results showed that the occurrence and damage degree of rice sheath blight showed as throwing transplanted rice>Traditional Planting Rice>direct-sowing rice>rice of transplanting by machine. Accounted all results, it was reasonable to draw the conclusion that the main effects which influenced the occurrence level of sheath blight were the planting method and planting density of rice.

Key words:rice (Oryza sativa L.); planting methods; fungal rice sheath blight (Rhizoctonia solani); occurrence and damage

随着我国现代农业的发展,农业结构调整,及农村劳动力转移和人口老龄化,以手工插秧为主的传统水稻种植技术已不能适应当前我国水稻生产的需要[1]。传统水稻种植方式必须向现代种植方式转变,才能促进水稻生产持续稳定发展[2]。为此,急需研究和发展水稻抛秧、直播、机插秧等节本、省工、高效的水稻种植方式。

纹枯病是水稻生产上的主要病害之一,在世界各产稻区均有发生,并且日趋严重,现已居水稻三大病害之首,该病主要危害水稻叶鞘导致叶片失水枯死,造成水稻产量减少和品质下