不同剂量唑草酮与炔草酯桶混防除冬小麦田杂草效果及安全性

在冬小麦返青期,采用田间小区试验,分别用不同剂量唑草酮及炔草酯桶混防除麦田发生呈上升趋势的恶性杂草猪殃殃及看麦娘,并对小麦的安全性进行测定。结果表明,唑草酮与炔草酯低剂量(24g/hm2+30g/hm2)处理对麦田阔叶杂草播娘蒿、猪殃殃及看麦娘40d总体株数防效在85%以上,鲜重防效在90%以上,提高了除草效率,并对作物小麦安全,除草增产效果明显。

Control Effect and Security of the Tand Mixture of Carfentrazone-ethyl and Clodinafop-propargyl in Winter Wheat

The tank mixture of carfentrazone-ethyl and clodinafop-propargyl with normal dosage was determined for the control effect of weeds in winter wheat and security by field experiment. The results showed that the tank mixture had complementary functions on weed control spectrum. At lower dosage （24 g/hm2＋30 g/hm2）, the general control effect against Descurainia sophia （L.） schu.,Galium aparine and Alopecurus aequalis Sobol. was above 85%, and the weight effect was above 90% after 40 d. The herbicidal effect was improved by mixing, and it was safe for wheat.