Calcareous soil application pomegranate tree BB fertilizer with major elements, medium elements and micro elements

Abstract

The invention provides a calcareous soil application pomegranate tree BB fertilizer with major elements, medium elements and micro elements, the pomegranate tree BB fertilizer has the major elements of nitrogen, phosphorus and potassium, the medium elements of calcium, magnesium and sulfur and the micro elements of iron, zinc, manganese, boron, molybdenum, chloride and copper, the pomegranate treeBB fertilizer is prepared from five fertilizer sources of monoammonium phosphate, urea, potassium chloride, calcium magnesium phosphate powder and phosphogysum particles according to wooden barrel laws and soil fertility grading method, by use of the interaction of the five fertilizer sources for improvement of fertilizer efficiency, the application amount of the fertilizer is reduced, the priceis low, the price of the 45% three-element BB fertilizer prepared from the five fertilizer sources of the monoammonium phosphate, the urea, the potassium chloride, the calcium magnesium phosphate powder and the phosphogysum particles is low, and is about 20 yuans cheaper per 50kg than that of a same content compound fertilizer on the market, and according to garden tests, under equivalent-nitrogenand phosphorus conditions, the yield of pomegranate fruits fertilized by the BB fertilizer prepared from the five fertilizer sources can be increased at average by 10-20% per mu compared with that ofthe pomegranate fruits fertilized by a BB fertilizer prepared from diammonium phosphate as a phosphorus source.

Description

technical field [0001] The invention belongs to the field of formula fertilization, in particular to a pomegranate tree BB fertilizer which is applied in calcareous soil and contains a large amount of trace elements. Background technique [0002] The so-called "BB" fertilizer is the abbreviation of English Bulk Blending Fertilzer. It is mainly a kind of compound fertilizer formed by physically blending two or more single fertilizers or compound fertilizers in a certain proportion. At present, some developed countries promote the "BB" fertilizer. The area of ​​BB" fertilizer has reached more than 80%, but my country is still using traditional fertilization experience, resulting in a passive situation of using one-third of the world's chemical fertilizers to produce one-fifth of the world's grain. Under the guidance of the idea of ​​"fertilization" as "formula fertilizer application", the promotion of "BB" fertilizer area has been greatly developed, but in the process of prepari...

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Problems solved by technology

[0002] The so-called "BB" fertilizer is the abbreviation of English Bulk Blending Fertilzer. It is mainly a kind of compound fertilizer formed by physically blending two or more single fertilizers or compound fertilizers in a certain proportion. At present, some developed countries promote the "BB" fertilizer. The area of ​​BB" fertilizer has reached more than 80%, but my country is still using traditional fertilization experience, resulting in a passive situation of using one-third of the world's chemical fertilizers to produce one-fifth of the world's grain. Under the guidance of the idea of ​​"fertilization" as "formula fertilizer application", the promotion of "BB" fertilizer area has been greatly developed, but in the process of preparing and producing BB fertilizer, there are still many disadvantages: First, the selection of fertilizer sources is unscientific, and the relationship between fertilizers has not been brought into play. Synergistic joint response, the so-called joint response, that is, when two or more elemental fertilizers are used in combination, the fertilizer output exceeds the sum of the yields of the single application of elemental fertilizers

Some enterprises do not know the characteristics of chemical fertilizers very well, and use urea to mix calcium superphosphate and nitrophosphate fertilizers, causing severe deliquescence, and even hundreds of tons of deliquescence deliquescence into empty bags, causing heavy losses; second, they only pay attention to nitrogen, phosphorus, and potassium. The middle elements of calcium, magnesium, and sulfur and the trace elements of iron, zinc, manganese, boron, molybdenum, chlorine, and copper are ignored. The international market is contradictory. At present, the price of my country's bulk agricultural products is higher than that of the international market and has no competitiveness. However, the prices of vegetables and fruits in my country are lower than those of similar products in the international market. In accordance with the national policy of zero-growth chemical fertilizer production, the research on the application of a large amount of BB fertilizers for fruit trees and vegetables containing a large amount of medium and trace elements in calcareous soils was carried out in a timely and early manner.

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