High-activity biological water-keeping slow release composite fertilizer and preparation method thereof

Abstract

The invention provides a highly active biological water preservation slow release compound fertilizer. The special compound fertilizer is prepared by compounding the ordinary fertilizer with microelements, then a certain amount moderate organic minerals, high water-absorbent resins, humic acids, and biological preparation are crushed and mixed into 100 mesh to 350 mesh to obtain compound powder preparation and subsequently the special compound fertilizer is placed into a granulator, and added with water with a mass ratio of 0.1 to 1 to the compound fertilizer. At last, the compound powder preparation is added into the granulator and the obtained mixtures are granulated and dried to obtain the highly active biological water preservation slow release compound fertilizer. The adoption of ordinary nitrogen, phosphor, and potassium as main materials, and mix of croelements according to requirements for soil fertilizer test and plants to adjust the formula, the highly active biological water preservation slow release compound fertilizer can enhance the effective utilization of fertilizer, lower the pollution to soil, and facilitate the growth of vegetables. The application of the product to the agricultural and forestry production can enhance the utilization of fertilizer by above 60 percent and lower the used amount of fertilizer by 50 percent, reduce the pollution to soil, and enhance the yield and quality of crops.

Description

technical field [0001] The invention belongs to the technical field of agricultural fertilizers, and relates to a slow-release compound fertilizer used in agricultural and forestry production such as food crops, economic crops, and afforestation, in particular to an active biological drought-resistant slow-release compound fertilizer and a preparation method thereof. Background technique [0002] Slow-release compound fertilizers have been rapidly developed and widely used in recent years because of their controlled-release and formulated fertilization effects on fertilizers and their ability to improve the effective utilization of fertilizers. Chinese patent 03113239.1 discloses a slow-release drought-resistant compound fertilizer and its preparation method. It is prepared by adding sulfur powder and water-retaining agent to the existing compound fertilizer containing nitrogen, phosphorus and potassium. It is rich in nitrogen, Nutrient elements such as phosphorus, potassium...

AI Technical Summary

Problems solved by technology

Chinese patent 03113239.1 discloses a slow-release drought-resistant compound fertilizer and its preparation method. It is prepared by adding sulfur powder and water-retaining agent to the existing compound fertilizer containing nitrogen, phosphorus and potassium. It is rich in nitrogen, Nutrient elements such as phosphorus, potassium and sulfur can absorb and retain water at the same time, and release them slowly with the growth of plants to provide them with sufficient water and nutrients; It has the characteristics of absorption, and can improve the aggregate structure of the soil, increase water permeability and air permeability, but this product has no biological function, no trace elements, and the effect of saving fertilizer, improving soil and increasing production is not obvious

Chinese patent 0311314 discloses a slow-release compound fertilizer with a frame structure. Its product can control nutrient release and prolong the period of fertilizer effect, but it lacks drought resistance and active biological effects, and the effect of saving fertilizer is not very obvious

Chinese patent 200310105808 discloses a production method of liquid slow-release compound fertilizer. Its product is mainly composed of sodium acrylate or polyacrylamide polymer materials based on water-soluble compounds such as nitrogen, phosphorus, potassium, iron, zinc, and manganese. The presence of active compounds will greatly reduce the water absorption and water retention capacity of the polymer, and it is more convenient to spray on the leaves, but it will cause some problems when used in the soil, and there is no active biological function; Chinese patent 200610081670.6 discloses a A production method of rare earth-containing nitrogen, phosphorus and magnesium long-acting slow-release compound fertilizer, which mainly uses ammonia nitrogen wastewater in the rare earth smelting process as raw material, connects the production process, has a simple process, and reduces costs, but the fertilizer saving and efficiency increase are not obvious. Not conducive to large-scale promotion