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The influence of temperature Temperature not only has a great influence on people, but also has a great influence on crops, which can determine the speed at which crops mature.
Temperature can regulate the synthesis and development of ripening active substances in plants, such as the production and ripening of substances such as ethylene and abscisic acid, so that crop yields mature very quickly, accelerate the maturity speed, and can mature earlier and harvest earlier.
Influence of Water After the beginning of autumn, rainfall gradually decreases, soil moisture gradually decreases and becomes worse. As the temperature decreases, crops require less water, and summer crops are about to enter the mature stage, reaching the point of ripening.
After the beginning of autumn, due to the decrease in water content, summer crops gradually decrease in water content, begin to decline, become old, and mature.
The influence of light The position of the sun shifts after the beginning of autumn, the light intensity gradually weakens, and the photosynthetic capacity decreases. With the decrease of temperature and moisture, the synthesis of ripening active hormones in crops gradually increases, and crop products begin to mature and decline rapidly. Then enter the mature period.
After the beginning of autumn, the weakening of light intensity has a serious impact on the growth and development of crops that require strong light. For example, the growth and development of crops such as rice, soybeans, corn, and sweet potatoes have a great impact, leading to rapid decline and maturity. Therefore, light will have a great effect on the later development of crops.
What should be paid attention to in farming activities?
Irrigation of various crops grows vigorously, late rice blooms and bears fruit, soybean pods, corn tassels and silk, cotton bears bolls, and sweet potato chunks quickly swell. The water requirements are urgent. Drought in this period will cause the final crop to be difficult to remedy. loss. Therefore, there are sayings of "Three rains in the beginning of autumn, and the rice becomes rice", "The rain in the beginning of autumn, the land is full of gold". Farmer friends need to water their own crops more during this period.
After the beginning of autumn is managed, the weather will gradually become cooler. In addition to applying quick-acting fertilizer to the poorly growing fields, the maintenance, pruning, and removal of old leaves must be kept up in time to reduce losses and prevent superior products from turning into inferior products. The agricultural proverb says: "Seven digging for gold, eight for digging silver." Autumn digging can eliminate weeds, loosen the soil, and improve water retention capacity. If combined with fertilization, crops can grow better.
Deworming and the beginning of autumn is also a time when a variety of crop diseases and insect pests are concentrated, such as rice rice stem borer, rice leaf roller, rice planthopper, cotton bollworm, and corn borer. We must strengthen prediction and control, and focus on the occurrence of different crops. Different pests, use targeted potions as soon as possible to remove them.
In short, after the beginning of autumn, it is mainly the change of temperature, the decrease of water content, and the weakening of light intensity, which have a great effect on the growth and development of crops, and have great practical significance in promoting the maturity and harvest of crops.