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小麦田进行化学除草是一种常用技术,但使用不当造成药害的现象,每年都有不同程度的发生,现将几种除草剂在麦苗上的药害症状介绍如下:异丙隆是一种选择性内吸性传导型除草剂,抑制绿色植物的光合作用而发挥灭草作用。施用后会降低麦苗的抗冻能力,在短期内遇低温霜冻天气,麦苗容易受冻害,出现常说的“冻药害”现象,叶尖干枯,叶片像开水烫一样,是典型的冻害症状。一般施药后15天内出现,严重的霜冻天气,就可能对
Wheat field chemical weeding is a commonly used technology, but the phenomenon of improper use of phytotoxicity, occur in varying degrees each year, several herbicide in wheat seedling symptoms are described below: Isoproturon is a Selective absorption conduction type herbicides, inhibition of photosynthesis of green plants play a role in weeding. Application will reduce the frost resistance of wheat seedlings in the short-term encounter low temperature frost weather, wheat seedlings susceptible to frost damage, often said “freeze injury ” phenomenon, leaves dry, leaf boiling like hot water, is a typical frost damage symptom. The general application within 15 days after emergence, severe frost weather, it may be right