During the early rice breeding period this year, the climatic conditions in the early stage were basically normal, the seedlings grew better and the number of seedlings was higher. However, in the late growth period of the seedlings, the temperature suddenly rises sharply. On April 11th, the maximum temperature exceeds 30 °C. In the next few days, the temperature drops sharply. In some places, the hail falls, and the cooling rate is above 20 °C. A small number of farmers have not taken cold protection. Some measures have been taken to cause the early rice seedlings to be damaged to varying degrees. The main performance is that the quality of the seedlings is worse, the number of white roots and the area of ​​green leaves are reduced. Second, the number of basic seedlings in the field is significantly insufficient after the throwing, and the time for returning to green is prolonged. The third is the phenomenon of dead seedlings thrown before cooling. In order to speed up the growth of early rice and early seedlings, ensure the effective number of seedlings, and reduce the losses caused by unfavorable climatic conditions, the following comments are made on the early field management of early rice:
First, scientific management of water
The management of water adopts the management method of thin water returning to green, shallow water sputum, daily irrigation night drainage or post-water non-previous water. In the tillering period, it is necessary to grab the sunny days and close the mud, to take advantage of the seedlings, speed up the greening, increase the low tillering, and in case of low temperature irrigation.
Second, rational fertilization
Early application of heavy weight fertilizer, 5-7 days after transplantation, generally 10-12 kg of urea per acre plus 10 kg of potassium chloride, in order to achieve the purpose of promoting tillering, more tillering, early enough seedlings.
Third, chemical weeding
According to the situation that the rooting of the early rice is slow and the greening time is long after the rice is inserted, the herbicide should be specially selected for herbicide removal, and the dosage should be strictly controlled. It should not be used excessively. When using herbicides, it can be combined with top dressing, pay attention to uniform application, and keep shallow water in the field. The herbicide should be used within 15 days after the field is inserted.
Fourth, strengthen pest control
According to the forecasting and forecasting opinions of the plant protection department, we will do a good job in comprehensive prevention and control of pests and diseases in a timely manner.
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