Granular organic composite straw fertilizer

Abstract

The invention discloses a granular organic composite straw fertilizer. The granular organic composite straw fertilizer comprises the following components in percentage by dry weight: 50-70% of crop straws, 10-15% of straw-prepared bio-char, 10-20% of humic acid fertilizer, 1-3% of bone meal and 3-5% of trace element compounds, and is prepared through the following steps of mixing according to certain weight percentage after smashing all the components in dry weight, sufficiently and uniformly mixing, and then, carrying out granulation treatment. By applying the granular organic composite straw fertilizer, the soil structure can be improved, and the utilization efficiency of the fertilizer can be increased.

Description

technical field [0001] The invention relates to soil improvement technology, in particular to a green, environment-friendly and safe compound straw organic granular fertilizer for soil improvement. Background technique [0002] During the growth of crops, it is necessary to absorb a variety of appropriate mineral nutrients (abbreviated as elements) from the soil to maintain their normal growth and development. Among them, there are elements in high demand such as nitrogen, phosphorus, potassium, etc., elements in moderate demand such as calcium, magnesium, sulfur, etc., and trace elements such as iron, manganese, copper, zinc, molybdenum, boron, etc. [0003] In the modern agricultural production system, in order to obtain the best economic benefits, the cultivated soil is overutilized, so that the cultivated soil can provide limited mineral nutrients for crops to absorb during the crop growing season. Therefore, supplementing appropriate amount of mineral nutrients for cro...

AI Technical Summary

Problems solved by technology

Although the large-scale application of chemical fertilizers has greatly increased food production and made a great contribution to solving the problem of food and clothing for the people of our country, it has also led to the increasingly prominent problem of unreasonable use of chemical fertilizers in our country. For example, heavy chemical fertilizers and light organic fertilizers; heavy nitrogen Phosphate fertilizers, light potassium fertilizers; major element fertilizers, light fertilizers; heavy surface fertilization and spreading, ignoring deep fertilization; blind fertilization without understanding the conditions of crops and farmland and the demand for mineral nutrients, excessive fertilization is serious, resulting in increasing soil compaction serious

Therefore, in recent years, the use of chemical fertilizers has increased year by year, but the increase in grain output has not increased much in the same period, causing a serious contrast between the use of chemical fertilizers and grain output, resulting in a downward trend in the utilization rate of chemical fertilizers, which not only wastes resources, but also increases production costs. Agricultural expenditure costs; moreover, the remaining fertilizer nutrients that are not absorbed and utilized by crops will be lost to the air, soil and water bodies through various channels, resulting in soil compaction, deterioration of soil structure, and serious environmental pollution problems. For example, agricultural Non-point source pollution, greenhouse gas emissions, acid rain, soil degradation, etc.