Summer corn field management measures after heavy rain

In the recent heavy rains in Shenzhen City, the rainfall in most regions was 70-80mm, while the rainfall in townships such as Chenshi, Xicun and Dafengying was relatively high, especially in some villages in Xicun Township, which reached more than 200mm, resulting in some low-lying plots in the fields. The accumulation of water has caused certain difficulties for the field management of autumn crops. If improper management results in production cuts. According to rough statistics, there are 171,000 mu of plots of land with stagnant water in the city, in order to reduce the damage caused by stagnant water, and prevent the crops from falling in autumn. The farmers are reminded to take prompt response measures after rain, and to intensify the production of summer corn and other crops. Field drainage and management lay a good foundation for autumn harvest.

First, after the summer corn rain management

1. Drain the area after heavy rains to ensure that there is no stagnant water in the field. In the early stage of corn, it should be drained in time and the flooding time should not exceed 0.5 days.

2, early application of Miao Fei, foliar fertilizer can be sprayed properly. To timely raise seedlings, large bell-mouth topdressing urea 20 kg per mu. For fields that are flooded for a long time and have serious waterlogging hazards, high-efficiency foliar fertilizers and root-reinforcing agents are sprayed simultaneously with fertilization to promote transformation of seedlings, promote root development, and promote restoration of growth.

3, weeding weeding. Do a good job of cultivating crops, eradicating weeds. Intertillage can loosen the soil, improve soil physical and chemical properties, remove excess water, control the promotion and reduce weeds, and promote root bar. Generally cultivating 2 or 3 times.

4, do a good job of pest control.

The main disease in corn seedling stage is corn rough dwarf disease, which is a devastating disease of corn, which can cause severe reduction in yield and yield, mainly relying on Laodelphax striatellus, Thrips virus to spread the virus, corn susceptible to disease before the five leaves, ten leaves resistance Sexual enhancement, early sowing and weedy fields are more serious. For the prevention of corn shrinkage, spray the chrysanthemum pesticides on the fields where the horses are harmed, and spray the high efficiency cypermethrin or avermectin on the land where the density of the plants is high. The occurrence of the disease. At the same time, we must strengthen observation in the field and remove weeds in a timely manner. This can effectively prevent the occurrence and spread of the virus, and early detection and timely removal of diseased plants to bring out the field treatment. Prevention of sheath blight, stalk rot can be used Jinggangmycin or carbendazim spray, spraying spray to focus on the following stems and leaves; prevention and treatment of large-scale spot can be chlorothalonil or thiophanate-methyl, 7 to 10 days, Continuous 2 or 3 times.

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