摘要
为了探索适合寒地水稻旱育秧田的新型封闭除草剂品种,进行了寒地水稻旱育秧田杂草防除效果和水稻安全性研究。结果表明:30%恶嗪草酮悬浮剂180～450mL.hm-2对寒地水稻旱育秧田禾本科杂草的防效较好,药后25d株防效均在90%以上;但当使用剂量在300mL.hm-2以上时,水稻生长出现不良现象,从防除效果和水稻的安全性两方面考虑,建议30%恶嗪草酮悬浮剂在水稻旱育秧田播种覆土后使用低剂量12mL.hm-2为宜。
In order to explore new closed herbicides which suitable for cold rice-nursery,the control effect on weeds and safety on rice of dry rice-nursery in cold area were studied.The results showed that：the control effect of 30% Oxaziclomefone SC for gramineous weeds was better when the concentration was between 180 and 450mL.hm^-2,the control effect was more than 90%after 25days,but it was unhealthy for rice when the concentration was up to 300mL.hm^-2.Considered the control effect and safety of rice,it is advisable to use the low dose-180mL.hm^-2 for 30% Oxaziclomefone SC of dry rice-nursery in cold area.
出处
《黑龙江农业科学》
2013年第7期57-59,共3页
Heilongjiang Agricultural Sciences
关键词
寒地
水稻
旱育秧田
杂草
防效
cold area
rice
dry rice-nursery
weeds
control effect
