东北稻区杂草稻分布与特征及其有效控制措施  

Distribution and Effective Control of Weedy Rice in Northeast Region

作　　者：刘秀[1] 李俭[1] 李海粟[1] 吴明根[1] 

机构地区：[1]延边大学农学院,延吉133002

出　　处：《黑龙江八一农垦大学学报》2015年第2期5-9,共5页journal of heilongjiang bayi agricultural university

基　　金：吉林省世行贷款农产品质量安全项目(J14)

摘　　要：针对东北稻区杂草稻种子的吸水性及耐冷性,分析了越冬期落粒于稻田的杂草稻种子的自然死亡原因,探讨了有效防除杂草稻的技术措施。东北稻区杂草稻出现波动现象,引起波动的主要客观原因在于越冬期稻田土壤干燥程度和耕翻措施。结果表明:东北稻区自生的杂草稻种子没有休眠特性;遇到降雨量多的年份,吸水的杂草稻种子不能安全越冬;东北稻区凡是采取提高杂草稻种子含水量的农艺措施,越冬期能够有效致死落粒于稻田的杂草稻种子。According to the absorbency and cold tolerance of weedy rice seeds in the northeastern region,the causes of natural death during the wintering period in rice fields were analyzed,and the effectively technical measures were discussed. The weedy rice in northeastern region has the wavy phenomenon,and the main reason is the drying degree of paddy soil and tillage measures. The results showed that the authentic weedy rice seeds had no dormancy characteristics,and in the more precipitation years,the highly absorbent weedy rice seed could overwinter safely,and the agronomic measures to improve the moisture content of weedy rice seeds could effectively kill the falling weedy rice seeds in rice fields.

关 键 词：东北稻区 杂草稻 分布 种子存活 控制措施 

分 类 号：S451.1[农业科学—植物保护]