Due to the fact that there is less effective precipitation in the winter and spring and the lower temperature in winter, the growth of wheat and rapeseed before winter is insufficient, the growth and development are delayed compared with the normal years, the young seedlings are weak, the area of ​​second and third seedlings is larger, and the current agricultural time has entered “ "Rain water" is a solar term, the temperature will rise immediately, and the growth of wheat and rapeseed will accelerate. In order to strengthen the management of wheat fields in spring and promote the transformation and upgrading of the seedlings, the loss caused by drought will be reduced to a minimum, and the following spring opinion will be formulated:
First, topdressing available fertilizer. In combination with rainfall and watering, the young seedlings with weak seedlings and insufficient base fertilizer, yellow leaves with old leaves, old leaves, and severely drought-prone wheat and rapeseed must be topdressed with wheat returning green jointing fertilizer and rapeseed bud moss fertilizer, and promote seedling transformation. The amount of fertilization depends on the condition of the seedlings. For the second and third types of seedlings, the average mus of 10-12.5 kg of urea can be applied. Before the rainfall can be applied, the water can be poured without rain, and it is best to apply chemical fertilizer. The top dressing time is appropriate in the middle and late February. The rapeseed should pay attention to the application of boron fertilizer.
Second, timely watering to prevent drought. A few days ago, in the county, we had a rainy season and the drought situation eased. If spring drought occurs, we must water it in time.
Third, weeding and weeding. Weeds in rapeseed fields are dominated by cultivators and weeds. They can both loosen soil and raise ground temperature, while avoiding phytotoxicity. Wheat fields are dominated by chemical weeding, and field plots can also be cultivated and weeded.
Fourth, prevention and control of pests and diseases. We must focus on the monitoring and prevention and control of wheat sheath blight, head blight, and midge pests. The prevention and control of wheat sharp eyespot disease in the wheat field, to be generally controlled before mid-March; on the basis of accurate monitoring of wheat stripe rust, continue to vigorously promote "accurate monitoring, with drug reconnaissance, find a point, control a The prevention and control experience of the disease has eliminated the onset of disease in a timely manner and is determined to do a good job in preventing and controlling diseases. For the wheat midge insects, we must strictly control the two key links in the flood season and adult stage, and do our utmost to reduce the population base and reduce the degree of damage. The filling period is the peak period for many kinds of pests and diseases. We must do a good job in comprehensive prevention and control, and use multiple spraying methods to minimize the risk of pests and diseases. Sclerotinia sclerotiorum should use fungicides for early control in the early flowering stage and flowering stage.
5. Clear up the three ditch to prevent later flooding. Although the water requirement increases from jointing to booting, and rape buds, the precipitation in this county also began to increase. It is extremely important to prevent waterlogging. After the precipitation, we must promptly clean up the “three channels†to reduce the water table and eliminate stains. Water prevents waterlogging.
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