Special slow release fertilizer for sunflower by using biomass granular carbon as matrix and preparation method thereof

Abstract

The invention discloses a special slow release fertilizer for sunflower by using biomass granular carbon as a matrix and a preparation method thereof. Granular carbon prepared from agricultural wastes such as corn cobs, peanut shells, rice hulls, edible fungi matrix and the like are used as a matrix material; and based on the micro-pores and strong adsorption capability of the matrix material, the granular biomass carbon-based special slow release fertilizer for the sunflower is prepared by compounding the matrix material and nitrogen, phosphorus, potassium and other nutritional elements required by growth and development of the sunflower. The biomass granular carbon is black biomass granular carbon granules formed after the agricultural waste biomass is incompletely burnt under the low-oxygen condition, has multiple properties similar to soil humus and strong adsorption and nutrient and moisture holding capabilities, can stimulate growth of crops, and has good slow release performance on nitrogen, phosphorus and potassium; when the prepared slow release fertilizer is applied at one time, the requirements of the sunflower for nutrients in the whole growth period can be effectively met; and the slow release fertilizer has the characteristics of increasing soil fertility, improving the structure of soil, realizing high efficiency and environment friendliness and the like, and is beneficial to large-scale popularization and application in the production of the sunflower.

Description

[0001] technical field [0002] The invention belongs to the technical field of agricultural fertilizer production, in particular to a special slow-release fertilizer for sunflowers using biomass granular carbon as a matrix and a preparation method thereof. Background technique [0003] In sunflower production, rational fertilization is an important measure to ensure yield and quality. my country's sunflowers are mainly distributed in Inner Mongolia, Xinjiang, Heilongjiang and other places. There are the following problems in fertilization: First, the main production areas have few people and a lot of land, and labor is scarce. It is difficult to achieve fine management. There is an urgent need for a labor-saving, Fertilizer varieties that can meet nutritional needs. The second is that the soil where sunflowers are planted is dry land, and the redox of these soils is strong, and the nitrogen fertilizer applied is quickly converted into nitrate nitrogen. Nitrate nitrogen is...

AI Technical Summary

Problems solved by technology

my country's sunflowers are mainly distributed in Inner Mongolia, Xinjiang, Heilongjiang and other places. There are the following problems in fertilization: First, the main production areas have few people and a lot of land, and labor is scarce. It is difficult to achieve fine management. There is an urgent need for a labor-saving, Fertilizer varieties that can meet nutritional needs

Nitrate nitrogen is not absorbed by the soil, and is easily washed deep into the soil layer by rainfall or irrigation water, making it impossible for sunflowers to absorb it, which not only wastes fertilizer, but also pollutes groundwater

In addition, most of the soil in northern my country is calcareous soil. These soils have high calcium carbonate content and are severely affected by the fixation of phosphate fertilizers.

At present, water-soluble phosphorus fertilizers are mainly used in sunflower production. After being applied to the soil, they directly contact with soil particles, which is prone to immobilization, and the longer they are in contact with the soil, the more serious they are immobilized. less effective on sunflowers

Third, at present, sunflowers mainly use quick-acting fertilizers. These fertilizers cannot be applied too much at one time. Therefore, in addition to applying basal fertilizers, topdressing is also required. However, due to the insufficient depth of topdressing, the fertilizer is far away from the root system, resulting in reduced fertilizer utilization.

In the burning season, there have been many incidents where flights could not land and highways were forced to close due to the smog in the sky, which not only wasted a lot of precious resources, but also brought serious pollution to the environment.