The level of wheat yield is highly dependent on the application of base fertilizer and seed fertilizer during sowing.
First, pay attention to the application of farmyard manure. At present, the winter wheat-summer maize continuous cropping area in the province, the summer maize is mostly planted with iron shovel, the wheat cultivating is covered with no-tillage, and the farmyard manure cannot be applied. Therefore, the agricultural fertilizer that is planned to be applied throughout the year can only be applied to wheat, and the amount of fertilizer used in mu Depending on the source, it can be more or less, and the method of applying it before arable land. The application of straw returning to the field combined with organic fertilizer is the basis for fertilizing the soil and continuing high yield. Linyi Fertilizer Network Copyright
Second, to ensure the application of phosphate fertilizer. Winter wheat is a wintering crop. Good phosphorus nutrition has a great relationship with promoting root development, increasing winter tillering, cultivating wintering and strong seedlings and safely overwintering; it has great relationship with promoting effective tillering, multi-earing, large-earning and grain filling. Moreover, it can improve the drought resistance, cold resistance, salt and alkali resistance, dry heat resistance, and resistance to pests and diseases of plants, and is an important nutrient factor for capturing high yield of wheat. Phosphorus is easily fixed in the soil, and the moving range is within 0.5 cm around the fertilization point, or the migration space is smaller than the glass ball played by the child. It can only be applied by the base fertilizer and the seed fertilizer to compare with the wheat root system. Good contact is absorbed, and if it is spread on the surface by topdressing, the utilization of phosphorus is greatly reduced. The nutrient critical period of phosphorus is the earliest among the three factors, and the re-utilization rate is high. All of these require us to apply the phosphorus nutrition required for the whole growth period of wheat to the bottom fertilizer and the fertilizer. Linyi Fertilizer Network Copyright
According to the research, the application rate of phosphorus (P2O5) in the wheat fields of 300, 400, 500, 600 kg per mu is 7-8, 10-11, 13-14, 16-17 kg, respectively. , 23, 29, 36 kg or so. Linyi Fertilizer Network Copyright
Third, the amount of nitrogen and potassium should be appropriate. In Hebei, Beijing and Tianjin, the yield of nitrogen (N) in the wheat fields of 300, 400, 500, 600 kg per mu is 12-13, 16-17, 20-22, 24-25 kg, nitrogen, phosphorus, The application ratio of potassium is approximately 1:0.5 to 0.7:0.3 to 0.4. The nitrogen absorbed by wheat during the wintering period is less than 14% of the nitrogen requirement during the whole growth period. In order to avoid the ineffective loss of nitrogen, the nitrogen application rate in the base fertilizer and the seed fertilizer should not be too much, generally accounting for 25% of the total nitrogen application. ~30%, the amount of potassium is preferably 50%. Linyi Fertilizer Network Copyright
Fourth, the base fertilizer should be matched. At present, winter wheat in Hebei adopts the method of direct returning corn stalks to the field. In order to reduce the straw content in the upper layer of the soil, improve the quality of sowing, and reduce or avoid the cold, freezing and drought damage caused by the upper and lower macropores. Straw returning to the field with the ground (note that it is not suitable for rotary tillage). If the bottom fertilizer is applied together with the farmyard manure before turning over the ground, this method of ploughing will inevitably cause the corn stalks, agricultural fertilizers, and fertilizers to be mostly turned over the plough layer, the plow layer, and the root system during the wheat seedling period to tillering. It is difficult to make full use of the applied fertilizer, which is very unfavorable for cultivating wintering and strong seedlings. In order to make up for this deficiency, the seed fertilizer should be used in combination with the application of the seed fertilizer. It can be mixed with the seeds with 5 kg of diammonium, and it is well mastered to adjust the amount. Linyi Fertilizer Network Copyright
In the wheat field of 500-600 kg per mu, the bottom fertilizer can be 30-35 kg of diammonium, with 7-8 kg of potassium chloride or potassium sulfate; the beauty of "20-26-9" or "18-24-8" can also be used. The special fertilizer for wheat is 40-50 kg, combined with straw and returned to the field before the cultivation. Linyi Fertilizer Network Copyright
5. Micro-fertilizer application should be concerned. The zinc-deficient soil can be zinc sulfate, the soaking concentration is 0.02%-0.05%, the seed dressing amount is 1-3 grams per kilogram of seeds, and the soil application is 1-2 kg per acre. The boron-deficient soil can be borax, the concentration of soaking seeds is 0.01-0.1%, the amount of seed dressing is 0.2-0.5 grams per kilogram of seeds, and the soil application is 0.5-0.75 kilograms per acre. The manganese-deficient soil can be used as manganese sulfate, the soaking concentration is 0.05%-0.1%, the seed dressing amount is 4-8 grams per kg of seeds, and the soil application is 1~2 kg per acre. One of the three methods of soaking, seed dressing and soil application can be used. Linyi Fertilizer Network Copyright
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