常用除草剂在幼林除草抚育中的效益试验研究

The Experimental Study on the Benefits of Common Weed Killers in Weeding Tending of Young Forests

试验结果表明 :草甘膦配剂除莠效果达到 85 %以上 ,如果加配 0 0 3%的森草净 ,除莠效果达 89%以上 ,而且除莠时效长 ,利于维护林地环境。除莠成本只是人工除草的 6 8%～ 78%。林草净除莠效果可达 97 5 %以上 ,但目前成本过高 。

The results show that the weeding effect of glyphosate compounding agent reaches 85% and more, the weeding effect reaches 89% and more with the addition of 0.03% of Oust, and furthermore, the weeding aging is long, which advantages safeguarding the forest land environments. The weeding cost is only 68%～78% of that of artificial weeding. The weeding effect of Velpar may reach 97.5% and more, but the cost is too high at present, and it is diffcult to be accepted by forestry and agriculture.