10%新得力可湿性粉剂防除稻田杂草药效研究

目的]研究10%新得力可湿性粉剂防除稻田杂草的药效。方法]在小区设10%新得力WP 60、75、90 g/hm2,塔山牌敌扑混剂WP 1.5 kg/hm2(标准药剂对照)和空白对照5个处理,施药后15、30 d分别调查禾本科、莎草科和阔叶杂草残存活株数,施药后50d调查主要杂草的残存活株数和鲜重,计算防除效果。结果]10%新得力可湿性粉剂1次施药,能有效控制水稻整个生育期的田间杂草,对水稻具有良好的安全性,增产效果明显,增产达10%以上。从使用的剂量来看,90 g/hm2防除杂草的效果最好,鲜重减退率达99.66%。结论]10%新得力可湿性粉剂能够有效防除稻田杂草,根据农药安全、经济、有效的使用原则,建议在生产中采用75 g/hm2示范推广应用。

Study on the Efficacy of 10% Sindax WP on the Rice Paddy Weed

Objective]The efficacy of 10% Sindax WP on the rice paddy weed was researched.Method] The effect of five treatment: 60,75,90 g/hm2 of Sindax WP,1.5 kg/hm2 of Tashan WP and CK,on the rice paddy weed were designed in field plot experimented.After application,the number of living Gramineae,Cyperaceae and broad-leaved weeds was investigated on the 15th and 30th day respectively and separate and the number and fresh weight of them were counted on the 50th day,so the control effect was calculated.Results] It was indicated that one time application of 10% Sindax WP can effectively control the field weeds during the period of paddy rice growth,and also it was safety to the paddy rice growth with the rice yield-increasing of 10%.From the use of the dose,the best control effect of weeds was at the dose of 90 g/hm2,the decreased rate of fresh weight of weeds was 99.66%.Conclusion] 10% Sindax WP could effectively control the weeds in rice fields.According to the principle of effective use of safety and economic of pesticide,it was proposed to use the dose of 75 g/hm2 in rice production.