There is basically no change in the number of spikes per acre of wheat after heading, but there is still a great change in the number of kernels and grain weight. This stage officially determines the critical period of grain weight, so it is necessary to strengthen management and management. The main focus is to preserve roots, preserve leaves, extend the duration of high photosynthetic value, delay aging, and increase grain weight. Next, Xiaobian will specifically talk about the technical points of increasing wheat grain weight, and hope to help everyone. First, the influence of external conditions on wheat grain weight 1, the temperature The suitable temperature for wheat grouting is 20-22 degrees. Above 25 degrees, the grouting speed will be slower. 2, lighting Adequate light, enhanced photosynthesis, is conducive to grouting; insufficient light, decreased photosynthesis, less organic matter, is not conducive to grouting. 3, moisture The water content of 20-50cm soil layer is 16-18%, which is beneficial to grouting; the effect of 0-20cm surface enthalpy on grain weight is better. 4, nutrients A certain amount of nutrients such as nitrogen, phosphorus and potassium are needed in the late growth stage of wheat; Nitrogen deficiency: premature aging, insufficient filling; Too much nitrogen: easy to be late and ripe; Potassium effect: promote the absorption and transformation of nitrogen by wheat and increase the photosynthesis intensity. 5, ripening rain Ripening rain causes abnormal premature maturity of wheat. 6, lodging Plant overlap, mildew of stems and leaves, and decreased grain weight. 7. Pests and diseases also have an important impact on grain weight. Second, the method of increasing the weight of the grain 1. Pouring the grouting water On the basis of pouring the water, according to the wheat field, the water is poured from the flowering to the filling stage to meet the water demand of the wheat growth. It should be noted that the watering should be stopped 10 days before the wheat matures. 2, prevent late lodging Reasons for the fall of wheat: improper watering in the later period; Methods for preventing lodging: appropriate reduction of basic seedlings and application of nitrogen fertilizer post-shifting techniques; Post-watering points: pay attention to the recent weather forecast, master the principle of no wind and water, and strong wind stop. 3. Comprehensive prevention and control of pests and diseases Common pests and diseases: powdery mildew, rust, aphids, midges, etc.; Control methods: chemical control, strengthen forecasting, and prepare medicines and instruments. 4, foliar spray fertilizer increased 1000-grain weight Management measures for wheat filling period: combined with disease prevention and treatment, spraying 100-150g of potassium dihydrogen phosphate per acre of land; Wheat field with lighter leaf color: spray about 3% urea solution on the leaf surface to improve grain quality; Micro-element fertilizers increase grain: spray molybdenum, boron, manganese and other trace element fertilizers. Organic Kale Powder,Organic Kale Leaf Powder,Freeze Dried Organic Kale Powder,Young Leaf Powder Kale Hengshui Shanzhi Health Drink Co., Ltd , https://www.grasspowder-sz.com
