Improve fertilizer efficiency: how to exert good
Spreading and spreading are generally applied to farmland basal fertilizers before unplanted crops, or deep-growing plants, planting plants, and cave acreages cannot be used during the growth of high-density crops. The fertilization method can be evenly distributed to the soil tillage layer, and the early root absorption and utilization of the favorable crop can be achieved by layered sowing before planting the crop, or after the sowing of the crop, the depth of the furrow is about 5 to 10 cm, and the soil is applied after the application.
Rotary planting is suitable for perennial woody crops. Generally, the trunk is used as the center, and the corresponding fertilization ditch in the margin of the upper part of the canopy is excavated. After fertilization, the soil is covered and the trunk can be dug into symmetrical 2-4. The crescent-shaped groove with a certain length of rice, when a large amount of organic fertilizer is applied in winter, can also be used in combination with cultivated soil to fertilize the material in the circular area under the canopy.
The application of fertilizer to fertilizers is dissolved in water to form a fertilizer solution that drenches the surface of the soil where the roots of the crop are concentrated. For the phosphorus and potassium fertilizers, the base fertilizer should be used for the reason of less mobility, and the method of spraying should not be used. Can achieve the purpose of top dressing.
Spraying is mainly used for the emblem element fertilizer, and the amount is more economical. It can avoid soil fixation, fast absorption of nutrients, high efficiency, easy to control the concentration and reduce pollution. When the root absorption capacity is weak in the later stage of the crop, the potassium dihydrogen phosphate is sprayed on the foliage. The solution can supplement the phosphorus and potassium nutrients, increase the grain (phosphorus) weight and increase the yield.
Chongfei material: depends on manure
The application method of irrigating with water is also called “fertilizingâ€, and it is generally a kind of top dressing that provides nutrients during the period of rapid growth of the crop. Since it is a supplementary fertilizer, it cannot replace basic fertilizers such as basal fertilization. However, many farmers like to use this top-dressing method, and it is effective to use it properly. Since red rice can only be applied with water, urea, ammonia, ammonium sulfate and ammonium nitrate are commonly used in nitrogen fertilizers, and potassium chloride and potassium sulfate in potassium fertilizers are used. Potassium nitrate can be fertilized by flushing.
Even phosphorus-ammonium phosphate and diammonium phosphate, which are water-soluble, do not need to be flushed. Because the phosphate fertilizer has poor mobility after being dissolved, it is easily fixed and cannot infiltrate into the root layer with water. The best application method of phosphate fertilizer can only be layered buried in the soil in order to improve its utilization. At the same time, it is not appropriate to break down granular high-concentration compound fertilizers, or to use unprocessed and insoluble solid organic fertilizers and microbial preparations as fertilizers.
Choose fertilizer: local conditions
Sandy soils of this type should be given more organic fertilizers, such as soil-fertilizer, straw returning to the field, or planting green manure in a timely manner to improve soil fertility, and gradually improve soil properties.
The application of organic manure to clay must be adequately controlled and decomposed, and topdressing of chemical fertilizers should be carried out as early as possible. It is advisable to reduce the frequency of fertilization and to avoid excessive use of nitrogenous fertilizer in later stages to prevent crops from becoming greedy and late. In addition, cultivating loose soil and improving soil ventilation should also be carried out.
Loam soil should be combined with long-acting fertilizer and short-acting fertilizer to meet the fertilizer demand in different growth periods of the crop in a timely manner. Organic manure and chemical fertilizer should be combined to fertilize the soil and be used for the same purpose. A large amount of fertilizer and micro-fertilizer should be combined to provide the crop with timely requirements. The various nutrients.
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