Detailed Explanation of Key Post-Season Management Techniques for High-Quality Wheat

@#@245@#@After wheat turns green, sustained high temperatures and drought have caused the jointing, stem elongation, and flag leaf stages to occur 5-7 days earlier than usual. Currently, the wheat seedling condition is close to normal, but growth varies between plots. Therefore, it is recommended to strengthen the late-stage management of high-quality wheat:

1. Carry out booting and heading fertilization and irrigation management as soon as possible: this fertilization and irrigation can not only promote floret development, increase floret fertility rate and increase grain number per spike, but also promote nitrogen uptake and conversion in the later stage of wheat, making it one of the very important measures to increase wheat yield, protein content and wet gluten content (mandatory indicators for national standard strong-gluten wheat). Generally, applying 3-5 kg urea and 1-2 kg potassium chloride combined with irrigation is sufficient.

2. Strengthen management during the grain-filling stage to improve grain quality: The focus of management during the wheat grain-filling stage is to protect roots and leaves and promote the accumulation of photosynthates and protein. Pests, diseases, and weeds should be controlled in a timely manner, and manual removal should be carried out promptly in plots with severe weed infestation. Because irrigation during the grain-filling stage and spraying with fenpropidin have a relatively large impact on wheat quality, under conditions where soil drought severity and powdery mildew occurrence are not very serious, irrigation and pesticide application should be controlled as much as possible. Combined with pest and disease control, foliar fertilization (nitrogen fertilizer and potassium fertilizer) can reduce the degree of wheat quality decline.

3. Purification and rejuvenation to maintain seed characteristics: After flowering, the characteristic traits of wheat varieties gradually become apparent. Time should be taken promptly to remove off-types and inferior plants. According to field conditions, generally carry out purification 2-3 times to ensure variety purity and seed characteristics and prevent degeneration.

4. Harvest at the appropriate time to prevent mixing: The best harvest period for wheat is from late dough stage to full ripening stage. If harvested too early, grain moisture content is too high and broken grains increase, while also affecting wheat processing quality. At harvest, different varieties must be harvested separately, and mixing is strictly prohibited; purity must not be lower than 98%. Special attention should be paid to weather changes during the harvest period to prevent sprouting in the spike due to rain, which would cause the wheat to lose its commercial value.

5. Dry reasonably to ensure dryness: When drying on concrete ground or asphalt pavement, if spread too thin, the high ground temperature can easily cause wheat protein denaturation and reduce processing quality. Therefore, the drying thickness for high-quality specialized wheat must not be less than 4-5 cm, and mixing during drying should also be prevented.