甲磺隆与阔叶净混配液防除狼毒的效果观察

在青海省海北州天然草地使用甲磺隆与阔叶净混配剂进行防除狼毒试验,结果表明,混配浓度越大对狼毒的防除效果越好,但防除狼毒的同时也会对草场中的其他优良牧草造成巨大伤害,特别是对阔叶牧草造成的伤害最大;综合分析认为:400g/hm2甲磺隆+200g/hm2阔叶净和400g/hm2甲磺隆+400g/hm2阔叶净,两种浓度的混配剂不仅对狼毒防除效果较好而且对禾本科牧草产量和阔叶牧草产量影响最小,优于1125ml/hm22,4-D丁酯(72%乳油)对狼毒的防除效果。认为这两种浓度的混配液在生产中有一定推广价值。

Effect of Mixture of Methsulfuron-methyl and Tribenuron-methyl Controlling Stellera chamaejas

Experiment was conducted by using different mixture proportion of methsulfuron-methyl and tridenuron-methyl controlling stellera chamaejas on natural grassland in Haibei prefecture of Qinghai.The result showed that the effect of controlling stellera chamaejas was more remarkable with increasing mixture concentration,but causing enormous damage to other good forage,especially to broad-leaf forage.It was a conclusion that two concentration of 400g/hm2 methsulfuron-methyl+200g/hm2 tribenuron-methyl and 400g/hm2 methsulfuron-methyl+400g/hm2 tribenuron-methyl were optimum for controlling stellera chamaejas and less damage to gramineae forage and board -leaf forage production,prefer to the effect of using 1 125g/hm2 2,4-D.A(72%).It is suggested that two concentration mixture have popularizing value in production.