论文部分内容阅读
通过总结多年来盘县农作物病、虫、草、鼠害的调查,预测预报以及防控经验,得出杂草对盘县农作物的危害程度不亚于病虫害的危害程度。其中,旱地杂草的危害尤为严重,每年旱地杂草的危害导致粮食产量损失10%~30%,给盘县农业生产带来较大的损失。为了更好地防除杂草,针对几种除草剂对旱地杂草的抑制效果进行试验,筛选出药效高、低毒、低残留的适合盘县旱地杂草防除的除草剂,结果表明,50%旱草净防除效果最好,其次是41%草甘膦。
By summarizing the investigation, prediction and prevention and control of crop diseases, insects, grasses and rodents in Panxian County over the years, it is concluded that the damage of weeds to Panxian crops is no less than that of pests and diseases. Among them, the damage of dry weeds is particularly serious. The damage of weeds in dry land leads to 10% -30% loss of grain yield each year, which brings great losses to agricultural production in Panxian County. In order to control weeds better, we tested the inhibitory effect of several herbicides on weeds in dry land and screened herbicides suitable for controlling weeds in dry land in Panxian County with high efficacy, low toxicity and low residue. The results showed that 50 % Nirvana control effect is best, followed by 41% glyphosate.