Affected by the disaster weather, the growth period of China's crops has been postponed this year, increasing the risk of cold exposure to crops such as summer corn and mid-late rice. At the moment when the production of autumn grain production is in a critical period, we must pay close attention to weather changes, focus on prevention of cold dewness, promote growth, promote early maturation, enhance the physiological activity of roots and leaves, promote grain growth, and strive for grain harvest to ensure a good autumn harvest.
corn
(1) Pouring grouting water. Insufficient water supply during grouting will affect the grouting process and result in a direct reduction in production. It is advisable to water at 7 to 10 days before the end of corn milking, and the amount of water should not be large to prevent lodging. In case of heavy rain, it is necessary to clear the ditch in time after the rain.
(2) Remove empty culms and diseased plants early and take them out of the field. This can improve the ventilation and light conditions in the field, reduce fertilizer consumption, and promote the formation of large spikes.
(3) Actively promote premature maturity. During the grain filling period, measures such as spraying potassium dihydrogen phosphate, dipping small sticks, and hitting the bottom leaves can promote early maturation and high yield.
(4) Late closing. In the loose dry loquat leaves, the grain becomes hard and shiny, the milk line disappears, and when the black layer appears at the base, it is harvested.
Rice
(1) timely irrigation. Pay close attention to the changes in the weather, and apply irrigation water 1 to 2 days before the cold dew winds to increase the soil temperature. The depth of irrigation is controlled according to different conditions. The wind is strong, the light is weak, and the water in the night is deeper. It can be shallow during the day and it can be kept moist. After the cold dew wind, the field should be drained so as not to cause the root and culm to become soft.
(2) Artificial water spray. During the cold dew season, avoiding water spray on the plants during the flowering stage of the rice can increase the humidity between the plants and ease the cooling rate, which is conducive to the solid grouting.
(3) Apply fertilizer timely. For the weak growing fields, appropriate nitrogen fertilizer was applied several days before the cold dew wind intrusion to increase photosynthesis efficiency. After the cold dew, we must spray potassium dihydrogen phosphate and other foliar fertilizers in time to restore the vigor of rice plants and promote grouting.
(4) Cut off water 7 to 10 days before harvest to achieve harvesting in dry fields.
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