March is the most critical period for the growth and development of wheat in Anhui Province and the promotion of seedling transformation. The Provincial Agricultural Committee recently combined the expert opinions and formulated the technical opinions on the wheat straw tube in March, requiring all localities to apply fertilizers in a timely manner, to prevent pests and diseases, and to prevent “cold springsâ€.
The time of jointing fertilization is generally controlled in the case where the leaf color of the group is faded and the base is fixed at the first interval (mid-March). For groups with small groups and weak seedlings, they can be applied as early as possible. For the group is too large, the leaf color is deep, and the sight of the seedlings is postponed until the end of March or early April. The amount of fertilizer applied is 7.5-10 kg per mu. Pests and diseases mainly focus on the prevention and control of wheat sheath blight and wheat spiders. For high-yield fields, or a small number of wheat fields that have a long-term tendency due to early sowing, excessive density or excessive fertilization, or varieties with poor lodging resistance (such as Yannong 19), it is necessary to carry out chemical control in time to prevent late lodging. . The time of chemical control was selected before and after the wheat was raised (early March), and the jointed plots should not be controlled.
After the jointing of wheat, pay close attention to the weather changes. Before the cold current arrives, the drought wheat fields should be watered (ditch irrigation) to ensure sufficient sensation, which can effectively reduce the incidence of spring frost. After the occurrence of freezing damage, it is necessary to promptly apply quick-acting fertilizer or foliar spray fertilizer for remediation. In the rice paddy field, it is necessary to clean up the field ditch in time to prevent sputum from falling.
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