Green food production how to fertilize

In crop production, people use fertilization to increase crop yield, improve product quality, increase economic efficiency, and maintain and increase soil fertility. Among the many fertilizers, organic fertilizers have become the ideal fertilizer for producing green foods.

1. Organic fertilizer plays an important role in improving food quality

The first is to increase soil fertility. Soil fertility indicators are an important part of soil environmental quality standards in green food production. Application of organic fertilizers is the main way to maintain and increase soil fertility. Organic fertilizer can loosen and fertilize the soil, promote the vigorous growth and robustness of plants, and increase resistance to drought, cold, lodging, and resistance to diseases and insect pests to achieve high quality and high yield.

The second is to reduce soil pollution. Soil organic matter and heavy metal elements are neutralized or chelated, adsorbing organic pollutants, thereby reducing the harm to plant foods.

Once again it is a nutritional effect. Organic nitrogen, phosphorus, amino acids, and nucleic acids can significantly increase the content of protein, sugar, vitamins, and aromatic substances in foods, increase the proportion of dry matter in fresh and tender foods, thereby improving the quality, flavor, and storage resistance of foods, and significantly improving color, appearance, and appearance. . This special role cannot be replaced by chemical fertilizers.

It should be pointed out that in modern high-yield and high-quality agriculture in China, more than 75,000 kg (15,000 mu) of organic fertilizer per hectare can meet the needs of crops every year, and the effect on quality improvement is obvious. Only the application of organic fertilizer and chemical fertilizer can achieve high quality and high yield. There are ways to increase organic fertilizers in the soil, such as building up farmyard manure, planting green manure, and returning straw.

2. Organic fertilizer needs to be detoxified

The application of organic fertilizers that have not been detoxified may result in food contamination that is more severe and difficult to prevent than chemical fertilizers. Chemical pollution is an important factor in the excessive content of harmful substances in domestic garbage. Organic pollutants mainly originate from batteries, electrical appliances, paints, and pigments. Organic wastes such as municipal waste and human and animal wastes contain a large number of pathogens, and these viruses live longer in the soil. According to the survey, vegetables such as cauliflower, cucumber, lentils and eggplant are heavily contaminated by E. coli, and potatoes, sorghum, bamboo shoots, radish, onions and cabbage are heavily contaminated by parasite eggs.

Green food production should keep the organic fertilizer harmless. First of all, we must take the source of organic fertilizers and ban the use of organic fertilizers that may be contaminated, especially those with heavy chemical pollution. Secondly, high-temperature composting should be carried out. Temperatures should be handled at 50°C to 55°C for 18 days. The coliform value should be reduced to 10-1, the mortality rate of maggot eggs should reach 100%, and the mortality rate of various fly maggots, cockroaches, and adults should be 100%. Can achieve the harmless standard of organic fertilizer. The production of green food should be prohibited from "producing soil under the ground."

The development and application of commodity organic fertilizer is a new field for the development of organic fertilizers. It meets the needs of the market economy and has reliable product quality. It can be used as one of the main fertilizers for green food production.

At present, there are mainly three categories of commodity organic fertilizers: (1) Municipal waste composting, which is mainly distributed in large cities. To solve the problem of urban waste pollution, commercialization of waste fertilizers has been achieved and better comprehensive benefits have been achieved. (2) Active organic fertilizers, which are made from livestock manure and wastes from agricultural and sideline products processing, are made of fermented microorganisms that are fermented, dehydrated, and made harmless. They are high quality organic fertilizers. 3 Humic acid, amino acid special organic fertilizer, rich in organic nutrient components and plant growth regulators, can be made into liquid fertilizer for foliar spray.