Since the beginning of this year, few wheat strips have appeared in the areas along the Yangtze River in Anhui Province. Some of them have rotted and broken in the internodes, and some have yellowed and black roots. This situation will undoubtedly have an impact on production. There are three main reasons:
1, affected by the low temperature this spring. These types of seedlings are usually planted in the middle of October and have more than 5 leaves; their former crops are the earlier droughts such as soybeans, cotton, and corn.
2, the former herbicide residue. Former herbicides used imidazolium niacin and schizophenone, which have effects on posterior pods; these herbicides must be used for four months before they are planted. After less than four months of use, the seed cultivars will follow the three-leaf stage. Affected, this situation can be seen in the field, into the operation of the (bar) distribution, repeat the spray of the place is more important; such as where the turning point is heavier.
3, after the spring to fight herbicide effects. Some farmers had hitherto herbicides after the Spring Festival. When the temperature was low, they could not be seen. When the temperature rose significantly, some of them appeared after spraying the herbicide after the jointing of wheat. This damaged seedlings rot between the nodes, and some of the roots changed. Black, also distributed in the field, is a strip distribution.
According to the survey of the author, most of them were due to frost damage; some were herbicides. However, the reasons for the occurrence of different plots are different, and specific investigations, specific analysis, and specific treatment should be conducted.
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