Flexible lift gate is a flexible soft curtain door, inside and outside the two curtains, curtains used between the aluminum beams connected with a vertically movable rail, the roof beams have levels not in the same straight line and hangar large plants in particular be applicable. Flexible lift door installation does not take up interior space in the hole inside. When the fiest move to open the door, and finally superimposed over the hole. Off event curtain rail first and then fall down until it is completely closed. Flexible Gate,Flexible Pvc Aircraft Folding Up Door,Steel Structure Fabric Flexiile Door,Exterior Automatic Flexible Door Shenzhen Hongfa Automatic Door Co., Ltd. , https://www.selfrepairinghighspeeddoor.com
1. Pursue suitable compound fertilizer according to local soil characteristics. For farmers who are located in alkaline soil in the north, they should generally choose acid compound fertilizer. On the contrary, farmers in southern acid soil should choose alkaline. Compound fertilizer; for soils with low organic matter content, it can generally be combined with the application of organic compound fertilizer or organic and inorganic compound fertilizer. In the alkaline soil of northwest China, it is generally not suitable to select and apply compound fertilizer produced by using soluble phosphorus, potassium chloride and ammonium chloride as raw materials.
Second, according to the variety of crops to buy compound fertilizer field crops should generally use NPK ternary compound fertilizer; for vegetables, fruit trees and other economic crops, especially root crops, due to more potassium, should use higher potassium and phosphorus Potassium ternary compound fertilizer; for chlorine-free crops such as grapes, potatoes, tobacco, sugar beets, etc., it is not suitable to apply compound fertilizer with high chloride ion content produced by using potassium chloride or ammonium chloride as raw materials.
Third, according to the nature of fertilizers to buy compound fertilizer Farmers friends should learn to understand and master a little about the common sense of fertilizer, so that you can find out when you buy fertilizer. National standards stipulate that the effective nutrient content of compound fertilizer (composite fertilizer) is divided into high, medium and low: high concentration of NPK ≥40%, medium concentration of NPK ≥30%, low concentration of NPK ≥25% Excluding trace elements and medium elements; water-soluble phosphorus content ≥ 40%. The nutrient content is different, the quantity applied and the technical requirements are different, of course, the price is different.
4. Purchasing compound fertilizer according to fertilization method In order to improve the fertilizer efficiency of compound fertilizer, different fertilizer types should be used for different fertilization methods. When used as a base fertilizer, it is necessary to purchase granular compound fertilizer, or to purchase a compound fertilizer containing slow-release fertilizer, which has a long fertilizer effect and is beneficial to increase the utilization rate of nitrogen. The effect of humic acid compound fertilizer is generally better than that of topdressing.
5. According to the principle of balanced fertilization, it is necessary to contact the agricultural technicians in order to understand the soil characteristics and the fertilizer requirements of the crops. It is best to combine with the soil testing and formula fertilization, according to the principle of balanced crop nutrition, according to soil testing. The result is a reasonable formula, what is missing what is needed to achieve a balanced supply of crop nutrients. Finally, it should be noted that the compound fertilizer is relatively fixed, must not be blindly selected and applied, nor can it be applied as a single fertilizer to avoid unnecessary loss and waste.
Preparation of compound fertilizer based on spring plowing
The compounding effect of the compound fertilizer is more significant than the application of the single-ferment fertilizer. This concept of fertilization has been recognized and accepted by farmers. However, due to a variety of factors, most farmers do not know that even if they purchase qualified compound fertilizers, they will reduce or even reduce crops due to improper selection or improper application.
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