Crop universal base fertilizer containing secondary and minor elements and preparation method thereof

Abstract

The invention discloses a crop universal base fertilizer containing secondary and minor elements and a preparation method thereof. The base fertilizer comprises the following raw materials in parts by weight: 18-24 parts of urea, 30-35 parts of monoammonium phosphate, 45-50 parts of polyhalite, 0.4-0.6 part of boric fertilizer and 0.8-1.0 part of zinc fertilizer. The boric fertilizer is sodium borate, and the zinc fertilizer is white vitriol. The preparation method comprises the following steps: carrying out physical crushing, screening and metering on the obtained raw materials, proportionally and thoroughly mixing in a stirrer to obtain a product, and carrying out metered packaging to obtain the finished product. The fertilizer contains the nitrogen, phosphorus and potassium, and also contains rich calcium, magnesium and other secondary and minor elements. When being used as a base fertilizer, the fertilizer can satisfy the demands for nutrients in the whole crop growth period, enhance the stress tolerance and immunity and increase the crop yield.

Description

technical field [0001] The invention relates to a fertilizer for crops, in particular to a general base fertilizer for crops containing medium and trace elements and a preparation method thereof. Background technique [0002] With the continuous development of the fertilizer industry, especially in the past 100 years, the amount of nitrogen, phosphorus and potassium fertilizers has increased dramatically. However, as crops take away medium and micronutrients but have not been systematically replenished, crop soils in areas lacking medium and trace elements are becoming more and more widespread, resulting in reduced crop yields, reduced quality, and even no harvest in severe cases. Under the application of medium and trace element fertilizers, it will often receive a very obvious effect of increasing income. This is also in line with the minimum nutrient law proposed by the German chemist Libizi, that is, when there is a lack of an essential element in the nutritional enviro...

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Problems solved by technology

[0004] Due to lack of understanding and production concepts, the application of medium and trace element fertilizers in my country is still in its infancy, mainly manifested in: farmers' understanding of medium and trace element fertilizers and the use of medium and trace element fertilizers are far from enough; although there are enough raw materials However, most enterprises only pay attention to the macro elements, such as the production of fertilizers containing only nitrogen, phosphorus, and potassium elements, and ignore and do not know how to use medium and trace elements, so medium and trace element fertilizers have not been well developed.

At present, most of the medium-trace element fertilizers in the domestic market are imported, and there are few full-element fertilizers containing medium-trace elements, especially base fertilizers that should be applied in advance before crop planting, and even less full-element fertilizers containing medium-trace elements , resulting in the slow promotion of medium and trace element fertilizers and the single type of base fertilizer

For some micronutrients, if the soil is deficient, it must be supplemented in the early stage of crop growth. Only the later topdressing will miss the period when the crop needs micronutrients, resulting in a decline in yield and quality or failure to complete normal life. history

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