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麦田进行化学除草,必须把握好五个要素:(1)气温。麦田化学除草效果随气温的升高而提高。一般内吸性除草剂,以在小麦苗长至一叶一心,触杀性除草剂在二叶一心至三叶一心,日平均气温达20℃左右时施药为宜。若日平均气温低于10℃,最好不要使用化学除草剂。(2)土壤湿度。当上表干燥时,影响除草剂使用效果,因此施药应加大用水量,以每亩75～100公斤为宜。(3)光照。因绿麦隆是通过抑制杂草的光合作用来杀灭杂草的,使用
Wheat field chemical weeding, we must grasp the five elements: (1) temperature. Wheat field chemical weeding effect increases with temperature. Generally within the suction herbicide to wheat seedlings grow as long as a leaf, touch herbicide in the second leaf heart to clover heart, the average daily temperature of about 20 ℃ when spraying is appropriate. If the average daily temperature is below 10 ℃, it is best not to use chemical herbicides. (2) soil moisture. When the table is dry, the effect of herbicide use, so the application should increase the amount of water to 75 to 100 kg per acre appropriate. (3) light. Because of chlorotolurin is to inhibit the weed photosynthesis to kill weeds, use