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1. Wheat nitrogen fertilizer transfer technology is suitable for field management of high-yield wheat fields with good fertilizer and water conditions and high-quality special wheat.
2. Determine the proportion of reasonable low-fertilizer and top-dressing, and transfer the proportion of fertilization. Nitrogen fertilizer transfer technology will reduce the proportion of nitrogen fertilizer base fertilizer to 50%, increase the proportion of topdressing to 50%, the proportion of high-fertility wheat field base fertilizer is 30% to 50%, the proportion of topdressing is 50% to 70%.
3. The spring topdressing time moved backwards to establish a reasonable population structure and yield structure for the two tiller-type spike varieties. Under normal circumstances, the top-dressing in the spring shifts to the jointing stage after returning to the green period or the period of getting up; the land with high soil fertility adopts the variety with high tillering spike rate, and the spring top dressing can be carried out from the jointing stage to the tip of the flag leaf.
4. Pay attention to the timely control of wheat stripe rust, powdery mildew, head blight, sheath blight, and aphids; use artificial or chemical methods to control weeds.
(two) technical effects
1. To effectively control the excessive proliferation of invalid tillers, shaping the flag-type of the flag leaves and the inverted two-leaf and healthy plant; to establish a reasonable population structure with a large accumulation of photosynthetic products and a large proportion of distribution to the grains after anthesis.
2. Increase the content of wheat grain protein and wet gluten, extend the dough stability time, and significantly improve the nutritional quality and processing quality of strong and medium-gluten wheat.
3. Improve root vitality in the later period of fertility, which is conducive to delaying aging and increasing grain weight.
4. Reduce the loss of nitrogen fertilizers, increase the nitrogen fertilizer utilization rate by 10%, and reduce the pollution of nitrogen to the environment. Generally, the yield increases by about 10% compared with traditional fertilization.
(I) Technical points