棉田不宜过早使用除草剂

• 作 者: 王瑞国
• 出 处: 农药市场信息
• 发表日期: 2011年12期
• 关键词: 除草剂 仲丁灵 风吹 土壤干旱 氟乐灵 造墒 使用效果 药剂 棉花播种 打垄

自去年入冬至今,我地多数棉区受旱严重,土壤比较干燥。近日,笔者发现有许多棉农在没有洇地造墒的情况下,耕完地后就过早地喷上了氟乐灵或仲丁灵除草剂,这样使用会严重地降低药剂效果。其主要原因是:1.由于天气干燥,土壤干旱,除草剂使用在土壤表层后,经过日晒风吹,极易分解和挥发,大大降低使用效果。

Since the winter of last year, most of the cotton fields in I have suffered from serious drought and the soil is relatively dry. Recently, I found that many farmers did not prefabricated in the case of moisture, after farming finished prematurely sprayed trifluralin or sec-Dingling herbicide, such use will seriously reduce the effectiveness of the agent. The main reason is: 1. Due to dry weather, soil drought, herbicides used in the soil surface, after the sun and wind, easily decomposed and volatile, greatly reducing the use of effect.