Carbon-based phosphate fertilizer

Abstract

The invention discloses a carbon-based phosphate fertilizer. The carbon-based phosphate fertilizer is a mixed fertilizer comprising biochar, a phosphate fertilizer, a bacteriostat and a synergist. The carbon-based phosphate fertilizer can improve the dissolubility of a nutritive element phosphorus in soil, improve a phosphorus utilization rate, reduce a fixation rate of a nutritive element phosphorus, activate dissolution activity of fixed phosphorus in soil, improve a utilization rate of a nutritive element phosphorus and a crop absorption and utilization rate, reduce a fertilizer investment cost, improve the total amount of phosphate solubilizing bacteria in soil, improve the activity of phosphate solubilizing bacteria, convert fixed phosphorus in soil into a soluble nutrient phosphorus which can be directly absorbed and utilized by crops, prevent soil hardening caused by utilization of a single conventional phosphate fertilizer, improve a soil loosening degree, delay soil hardening, improve a soil aggregate structure, reduce soil unit weight, improve biological activity of soil, improve the soil environment, increase a fat-storage and water-retention capacity of soil, supply trace elements which are needed by crops applied with a single phosphorus element, guarantee nutrient absorption balance of crops, and realize a yield increasing effect.

Description

technical field [0001] The invention relates to a fertilizer mixed with biological black carbon and phosphate fertilizer. Background technique [0002] At present, with the acceleration of national infrastructure construction and urbanization, the biochemical and abandoned phenomena of arable land are becoming more and more serious. (1) According to incomplete statistics, as of 2010, more than 60,000 kiln factories have been shut down nationwide. After the shutdown, there are still more than 25 million mu of raw land. The construction of the national expressway network and the earthworks of nearby earthworks have resulted in a considerable part of raw land. (2) Land salinization is becoming more and more serious due to factors such as rising groundwater level, seawater intrusion, and drought in the northwest. There are 500 million mu of saline-alkali land in the country. (3) 20% of the country's cultivated land is polluted by heavy metals to varying degrees, which affects ...

AI Technical Summary

Problems solved by technology

(3) 20% of the country's cultivated land has varying degrees of heavy metal pollution, which affects people's food safety

(4) The beach and hills in the vast lake areas in the south have been impregnated by groundwater for a long time to form cold-soaked fields. The cold-soaked fields have deep gleization layers, poor drainage, and poor soil ventilation and water permeability.

The soil temperature rises slowly in spring, the seedlings grow late, and the yield is low

(5) The vast number of young and middle-aged laborers in rural areas flow into the cities to go out to work, and the old, young, sick and weak left behind to cultivate the land do not use farmyard manure, but only use chemical fertilizers for a long time, resulting in land compaction, soil nutrients are greatly reduced, and the land is barren, resulting in crop resistance. The disease ability is greatly reduced, the nutritional status is poor, and even diseases and insects breed, the yield and quality of crops are greatly reduced, and the original medium-high-yield fields become medium-low-yield fields.

However, the solidification rate of conventional phosphate fertilizers in the soil is high, the effective utilization rate of phosphorus is low, the absorption rate of crops is reduced, the production cost is increased, the soil is easy to harden, and the growth and development of crop roots are inhibited; because the phosphorus solubilizing bacteria in the soil The activity is low, and it is difficult to convert conventional phosphorus fertilizers into phosphorus nutrients that can be directly absorbed and utilized by crops; long-term single application of conventional phosphorus fertilizers is easy to form soil compaction