In recent years, with the development of intercropping, the area of ​​late-sown wheat has expanded year by year. Due to the late sowing date, the emergence time of late-sown wheat after sowing was prolonged, and the vegetative growth time before winter was shortened. In the coming year, the number of spring leaves increased, and spring tillers were the main basis for tillering into ears. At the end of the late wheat ear differentiation time, the differentiation time is relatively short.
According to the characteristics of the growth period of late-sown wheat, fertilization should break the fertilization method of “sweet-based combined with phosphate fertilizerâ€, which emphasizes the application of nitrogen fertilizer in the base fertilizer, supplemented by the principle of nitrogen fertilizer, because phosphate fertilizer promotes early maturity and accelerates The special role of the reproductive process can promote the development of roots, which is conducive to deep rooting of wheat, enhance root activity, expand the utilization of fertilizer and water, and enhance the resistance of wheat. The root system is well developed, the nitrogen uptake capacity is enhanced, and the nitrogen utilization rate is increased, which promotes the early growth and stability of the wheat seedlings, and increases the tillering rate, which plays an important role in increasing the number of panicles. Re-application of phosphate fertilizer can make wheat flowering 1-3 days earlier, and the filling period is extended by 2-3 days, which provides possibility for late sowing early ripening and increasing 1000-grain weight. In addition, in the potassium-deficient areas, attention should be paid to the application of potassium fertilizer in the base fertilizer.
Under the premise of sufficient fertilizer and water, the spring wheat jointing period combined with watering for topdressing. It is not advisable to prematurely supply fertilizer and water during the rejuvenation period, resulting in many ineffective tillers and late maturity. From the jointing stage to the heading stage, the absorption of nitrogen, phosphorus and potassium reached the highest peak. Fertilization during this period will help the tiller to catch the main stem, increase the tillering rate, and promote the differentiation of small flowers, reduce the degradation and increase the number of grains per ear. . For those who are not tillering before the late sowing or the spring group is still insufficient, it is appropriate to increase the supply of fertilizer and water in advance, in order to increase the effective tillering and increase the number of ears per mu. Pay attention to balance when topdressing, nitrogen, phosphorus, potassium, micro-fertilizer application, leaf foliar fertilizer can be used in the later stage to meet the normal growth needs of wheat. At the same time, it also plays an important role in improving the function of spring wheat leaves, especially the upper leaves, increasing 1000-grain weight and increasing yield.
According to the characteristics of the growth period of late-sown wheat, fertilization should break the fertilization method of “sweet-based combined with phosphate fertilizerâ€, which emphasizes the application of nitrogen fertilizer in the base fertilizer, supplemented by the principle of nitrogen fertilizer, because phosphate fertilizer promotes early maturity and accelerates The special role of the reproductive process can promote the development of roots, which is conducive to deep rooting of wheat, enhance root activity, expand the utilization of fertilizer and water, and enhance the resistance of wheat. The root system is well developed, the nitrogen uptake capacity is enhanced, and the nitrogen utilization rate is increased, which promotes the early growth and stability of the wheat seedlings, and increases the tillering rate, which plays an important role in increasing the number of panicles. Re-application of phosphate fertilizer can make wheat flowering 1-3 days earlier, and the filling period is extended by 2-3 days, which provides possibility for late sowing early ripening and increasing 1000-grain weight. In addition, in the potassium-deficient areas, attention should be paid to the application of potassium fertilizer in the base fertilizer.
Under the premise of sufficient fertilizer and water, the spring wheat jointing period combined with watering for topdressing. It is not advisable to prematurely supply fertilizer and water during the rejuvenation period, resulting in many ineffective tillers and late maturity. From the jointing stage to the heading stage, the absorption of nitrogen, phosphorus and potassium reached the highest peak. Fertilization during this period will help the tiller to catch the main stem, increase the tillering rate, and promote the differentiation of small flowers, reduce the degradation and increase the number of grains per ear. . For those who are not tillering before the late sowing or the spring group is still insufficient, it is appropriate to increase the supply of fertilizer and water in advance, in order to increase the effective tillering and increase the number of ears per mu. Pay attention to balance when topdressing, nitrogen, phosphorus, potassium, micro-fertilizer application, leaf foliar fertilizer can be used in the later stage to meet the normal growth needs of wheat. At the same time, it also plays an important role in improving the function of spring wheat leaves, especially the upper leaves, increasing 1000-grain weight and increasing yield.
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