Wheat high yield fertilization procedure

First, re-applying the base fertilizer "Maixi tires rich, base fertilizer is the foundation." Generally, 2000 kg of high-quality organic fertilizer is applied. According to the law of wheat absorption, the high-fertilizer water plot should be applied with 4 to 7 kg of urea per acre or 23 to 38 kg of ammonium bicarbonate, 15 to 17 kg of diammonium phosphate, 12 to 17 kg of potassium chloride, or 45% composite. 50 kg or 40% wheat special fertilizer 50 kg. Medium and low-yield fertilizer plots should be applied with 2 to 5 kg of urea per acre or 5 to 12 kg of ammonium bicarbonate, 18 to 22 kg of diammonium phosphate, 9 to 12 kg of potassium chloride, or 45% of compound fertilizer or 40% of wheat. Special fertilizer 40 ~ 50 kg or 36% potassium dihydrogen phosphate compound fertilizer 50 kg. The zinc-deficient plot can be used with 2 kg of zinc sulfate.

Second, less fertilization Fertilization is the most cost-effective method of fertilization. Generally, 2 to 3 kg of urea per mu, or 8 to 10 kg of superphosphate, or about 10 kg of compound fertilizer. Micro-fertilizer can be used as base fertilizer or seed dressing. When used as a base fertilizer, it is difficult to spread evenly due to the small amount of use, and it can be mixed with fine soil and then applied to the surface, and then ploughed into the soil. When seeding with zinc and manganese fertilizer, 2 to 6 grams of zinc sulfate and 0.5 to 1 gram of manganese sulfate per kilogram of seeds are sown immediately after seed dressing.

Third, skillfully applying topdressing Skillful application of topdressing is an important measure to obtain high yield of wheat. There are two types of topdressing: one is soil topdressing, which is a more traditional method of topdressing. Topdressing fertilizers are generally used to topdressing nitrogen fertilizer. The time of topdressing is generally in the jointing stage. The amount of topdressing depends on the seedlings. The wheat has many tillers, the seedlings are good, and the growth is strong. It should be applied late and reduce the application rate. After applying 15-20 kg of urea per acre or 40-50 kg of ammonium hydroxide. Wheat is less tiller, seedlings are not good, and the growth is weak. It should be applied early and increased. It can be applied with 20 to 25 kg of urea per acre or 50 to 70 kg of ammonium hydrogen after regreening. However, for soils with poor soil fertility, the amount of nitrogen fertilizer should not be too large. It is advisable to apply 15 to 17 kg of urea per mu, and the application should not be too late. However, when the base fertilizer is not applied with phosphate fertilizer and potash fertilizer, and the soil supply of phosphorus and potassium is insufficient, the phosphate fertilizer and potash fertilizer should be properly applied. For high-yield fields with insufficient potassium, it is also possible to apply about 150 kg of grass ash before winter. For wheat fields with sufficient fertilizer, avoid excessive application of nitrogen fertilizer, and the time of top dressing should not be late. Otherwise, it will easily lead to late maturity and reduce production. The other is root spray, which is an effective fertilization method to supplement the nutritional deficiency in late wheat. Due to inconvenient topdressing in the wheat field, the absorption capacity of the root system is decreasing with the advancement of the growth period. Therefore, if the fertilizer must be applied after the late growth of the wheat, foliar spraying can be used, which is also an emergency measure for increasing wheat production. Every year in late May is a dry and hot wind season. Use 0.2% potassium dihydrogen phosphate foliar fertilizer for 1 or 2 times, with an interval of 5 to 7 days, which can effectively prevent dry heat and wind damage.
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