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以 3 9%乙·噻WP为试验材料 ,分析了土壤含水量对其除草效果及其对作物安全性的影响。结果表明 :土壤含水量明显影响乙·噻的除草效果及其对作物的安全性。在 10 %～ 3 5 %土壤含水量范围内 ,随着土壤含水量的增大 ,3 9%乙·噻WP的除草效果增加 ;当土壤含水量在 2 0 %以下时 ,需适当增加乙·噻用药剂量以达到理想的除草效果。随着土壤含水量的增大 ,3 9%乙·噻WP对作物的安全性降低 ;在土壤含水量 3 0 %以上时 ,乙·噻用药量不能超过 3 0 0 0g/hm2 。
The effect of soil water content on the weeding effect and its impact on crop safety was analyzed by using 39% of thiazole WP as the experimental material. The results showed that the soil water content obviously affected the herbicidal effect of thiazide thiazole and its safety to crops. In the range of 10% ~ 35% of the soil moisture content, the herbicidal effect of 39% BZT increased with the increase of soil water content. When the soil water content was below 20%, the soil B Thiazolidine dose to achieve the desired effect of weeding. With the increase of soil water content, 39% of thiabendazole WP reduced the safety of crops; when the soil moisture content was more than 30%, the dosage of thiazole could not exceed 30 000 g / hm2.