2甲4氯钠盐与高效盖草能混用在马铃薯田的除草效果研究

为了对马铃薯田中的多种杂草进行有效的防除,以大田马铃薯为研究对象,紫花白为材料。除草剂2甲4氯钠盐设5个浓度梯度,分别与高效盖草能混合,于马铃薯出苗后、杂草6～7叶期施药。结果表明,2甲4氯钠盐2.55 kg·hm~(-2)和高效盖草能525 mL·hm~(-2)混用时,除草效果明显。马铃薯田中阔叶类杂草和单子叶杂草株防效和鲜重防效分别达到90.45%、96.30%和90.06%、76.43%,其中主要杂草反枝苋、藜除草效果最为明显,株防效和鲜重防效分别达到93.00%、92.31%和90.74%、94.35%,且对马铃薯生长基本无影响。

Research on Weed Control Effect in Potato Field with Mixed use of Herbicide (MCPA-Na) and Haloxyfop-R-methyl

In order to control many kinds of weeds in potato field effectively,field potato was used as the research object and Zihuabai as the material to study the effect of mixed use of herbicide and Haloxyfop-R-methyl on weed control in potato field.Different concentrations of herbicides(MCPA-Na)mixture with Haloxyfop-R-methyl was used on the potato when seedling were carried out and weeds had 6～7 leaves.The results showed that when herbicide(MCPANa) was 2.55 kg·hm~(-2)and Haloxyfop-R-methyl was 525 mL·hm~(-2),the preventive effects for strain and fresh weight on broad leaves and monocotyled on weed reached 90.45%,96.30%and 90.06%,76.43%,respectively.The preventive effects of Redroot Amaranth and Goosefoot as main weeds was evident,they reached 93.00%,92.31%and 90.74%,94.35%,respectively.Furthermore,mixed use of herbicide(MCPA-Na)and Haloxyfop-R-methyl was safe for potato growing,and had obvious effect on weeding in potato field.