Wheat grain-filling method in booting stage

By mid-April, wheat in the Huaibei region began to fight for booting, marking the growth of wheat to the late stage of reproduction-based growth, which is also a critical period for the formation of yield. According to the characteristics of fertility in the late wheat period, scientific management measures should be adopted to consolidate the number of spikes and grains per panicle, so as to promote grain filling and grain weight in the later period. According to the climatic characteristics of Huaibei and the principle of “promoting, controlling and promoting” the management of high-yield wheat, management in the late wheat field should be promoted appropriately. The emphasis is on "protecting" and "defending." Paul: That is, to preserve the functional role and functional period of the clover, the root system is not premature aging. Only the upper three leaves remain green after wheat heading. The intensity of the photosynthetic function and the length of the functional period of these three leaves are directly related to the degree of grain filling. According to the author's research, under the ecological conditions in the Huaibei region, the upper three leaves have an effect on the weight of wheat grains by 20.4%, and the leaves of different leaf positions contribute to grain weight in the following order: flag leaf> inverted 2 leaves> inverted 3 leaves. In addition, the root system needs to be protected. In the later period, the wheat will rely on the original root system to absorb nutrients, moisture, and support on the ground. If the environment is not conducive to the root system, it will speed up the aging and premature aging of the root system and affect the normal progress of grouting. Prevention: that is, prevention and control of diseases, insect pests, and drought protection. Specific measures: 1 Timely prevention of pests and diseases. The main pests of wheat in the later growth period are roundworms and armyworms, and scabs occur in rainy weather. Once it is discovered, it should be sprayed and controlled in time. 2 Leaf spraying fertilizer and plant growth nutrient: When the leaf color begins to fade before and after heading, foliar spray of 1% urea solution or potassium dihydrogen phosphate solution is combined with spraying plant growth nutrient. Can spray 1 or 2 times, every 7 to 10 days. It has a significant role in protecting the upper three leaves, enhancing and extending the function of photosynthesis. 3 Drought Control and Flood Control: Wheat heading and flowering is the period when the wheat plant has the most vigorous metabolism and the most water requirement. The suitable soil moisture content of the plough layer is 17 to 19%. If there is little rain and drought, the root system will rapidly age. Therefore, if the drought occurs, it should be timely irrigated to supplement the soil moisture. If there is excessive rainfall or continuous rainfall, the root system will suffocate due to lack of oxygen. When there is a lot of rainfall, it should be drained in time to reduce the degree of damage caused by waterlogging.

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