Nine points to increase the utilization rate of phosphate fertilizer

First, due to fertilization. Soil conditions are closely related to phosphate fertilizer efficiency. In soils with low content of organic matter and available phosphorus, the application of phosphate fertilizer to most crops can increase production. Therefore, phosphorus fertilizers should be mainly distributed on soils with low organic matter content and phosphorus deficiency, so as to fully exert fertilizer effects. In addition, phosphate fertilizers should be preferentially applied to slender thin fields, dry land, new land and raw land, because these fields are usually more phosphorus deficiency, the effect of phosphorus fertilizer production increased significantly. Second, nitrogen, phosphorus and potassium. According to tests on wheat, the combined application of N, P and K increased production by 16.5% compared with single application of phosphorus, 10.5% more than single N application, and 6.4% more than N and P application. NPK combined application can promote each other, maintain nutrient balance, fertilizer utilization can generally increase 20-30%. Third, mixed application. The combined application of phosphate fertilizer and organic fertilizer can reduce the adsorption and fixation of phosphorus on the soil, promote the release of insoluble phosphate, enhance the vitality of the root system, and increase the phosphate fertilizer efficiency. Fourth, phosphorus nitrogen. Different crops have different phosphorus requirements and absorption and utilization capabilities. Practice has proved that legumes, rapeseeds, cotton, melons, and fruit trees are phosphorus-loving crops, and the application of phosphate fertilizer has a good fertilizer effect. In particular, leguminous crops are sensitive to phosphorus, and the application of P fertilizer can significantly increase the yield and nitrogen fixation, and play the role of "nitrogen addition by phosphorus". Fifth, the appropriate period of application. The critical period of phosphorus nutrition in crops is generally at the early stage of fertility, which is the key time for phosphorus demand. In this period, application can exert maximum efficiency. Therefore, phosphate fertilizer should be used as basic fertilizer, seed fertilizer, paddy field and seedbed fertilization, root picking and early top dressing. Six, centralized application. Phosphorus fertilizers are easily fixed by soil, and the utilization rate is only 10-25% in the season. Especially in various clayey soils, if phosphate fertilizers are applied, the fertilizer efficiency cannot be fully exerted. By adopting centralized fertilization methods such as furrow application, acupoint application, seed dressing and barnyardgrass, the application of P fertilizer to root-dense soil layers can reduce the contact surface between P fertilizer and soil, reduce the fixation of P by soil, and increase the utilization rate. Seventh, spraying outside the root. The use of super-calcium phosphate leachate for foliar application allows the leaves to absorb nutrients instead of roots, synthesize organic matter, reduce the absorption and operation process, and has the characteristics of less fertilizer, rapid fertilizer efficiency, and high utilization rate. The spraying time is better when the booting and filling stages are sprayed once. The amount of phosphorus sprayed outside the root can be 2-3 kg per mu, and spraying concentration should be 3-6%. Eight, with fertilizer application. In addition to reasonable application of phosphorus, in wheat, 1 kg of zinc fertilizer and 0.5 kg of boron fertilizer are applied per acre to increase the yield. Nine, economic application. Research shows that although the utilization rate of phosphate fertilizer is low in the season, it has a long aftereffect, and its residual efficiency is over 38.9% within 20 years. Therefore, when phosphate fertilizer is used more than once, it is not necessary to use it annually, but it should be noted that each dose Should not be too much, so as to avoid causing waste. China Agricultural Network Editor

Anti Bird Net

Anti Bird Net

Anti-bird net is a kind of polyethylene, high-density polyethylene, polypropylene and nylon which are added with anti-aging and anti-ultraviolet chemical additives. It is a kind of plastic woven mesh and anti bird net has the advantages of high tensile strength, heat resistance, water resistance, corrosion resistance, aging resistance, non-toxic and tasteless, and easy disposal of waste. It can kill common pests such as flies and mosquitoes. The conventional use of the collection is light, and the correct storage life can reach 3-5 years.

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