What is the best organic fertilizer for fruit trees?

When it comes to applying organic fertilizer to fruit trees, everyone must be familiar with it. Applying more organic fertilizer can not only improve soil fertility, but also provide various medium and trace elements for fruit trees. In addition, the content of organic fertilizer is also an important index to judge the quality of soil. Although we growers all know the benefits of organic fertilizer, what organic fertilizer should be used in orchards? How to choose organic fertilizer? Today, Xingnongtang will discuss with you how to apply organic fertilizer in orchards.

The most common traditional organic fertilizers are cow manure, sheep manure, pig manure and other human and animal manure. The organic matter content of pig manure is 15%, nitrogen 0.5%, phosphorus 0.5%-0.6% and potassium 0.3%-0.45%. The organic matter content of cow dung is 14.5%, nitrogen is 0.3%-0.4%, phosphorus is 0. 15%-0. 1%, and potassium is 0. 15%. The organic matter content of sheep manure is 24%-27%, nitrogen 0.7%-0.8%, phosphorus 0.45%-0.6% and potassium 0.4%-0.5%. Poultry manure contains 25.5% organic matter, 65,438+0.63% nitrogen, 65,438+0.54% phosphorus and 0.85% potassium. Although the organic matter and other nutrients of poultry are high, the salt content of poultry organic fertilizer is high, and fresh poultry manure is easy to produce underground pests.

Among these organic fertilizers, I suggest you choose sheep manure. The nutrient composition of sheep manure is between that of other livestock and poultry manure, which is delicate and has high fertility. Medium calorific value, suitable for use on sandy soil and clay.

Commercial Organic Fertilizer Commercial organic fertilizer refers to the commercial organic fertilizer produced by decomposition and fermentation of organic-rich raw materials such as animal and plant residues and feces. However, at present, the market of commercial organic fertilizer is chaotic, the technical level of manufacturers is uneven, and there are many manufacturers who are shoddy. Therefore, when choosing commercial organic fertilizer, we should not be greedy and cheap. Be sure to choose commercial organic fertilizer produced by regular manufacturers. In addition, there is an organic-inorganic compound fertilizer on the market, which has the characteristics of both organic fertilizer and compound fertilizer.

But its organic matter content is relatively low. If it is applied to soil as fruit tree base fertilizer in autumn, the dosage must be increased in actual production, which may lead to the risk of seedling burning and the application cost will increase greatly.

Bio-organic fertilizer The common commercial bio-organic fertilizer on the market at present is basically adding some beneficial microorganisms to the commercial organic fertilizer, such as Bacillus subtilis, Bacillus amyloliquefaciens, Bacillus megaterium, etc., which can decompose and utilize plant residues in the soil, and is also called "bacterial fertilizer".

Bio-organic fertilizer has comprehensive nutrients, can improve soil physical and chemical properties, contains beneficial microorganisms, promotes soil nutrient circulation and inhibits the growth of harmful bacteria. In addition, it can also alleviate the obstacles caused by continuous cropping. But the price of bio-organic fertilizer will be higher than that of organic fertilizer.

In the actual production of orchard, it is suggested that bio-organic fertilizer should be used in combination with organic fertilizer or farmyard manure, which can give consideration to both effect and cost.

Grass planting technology in green manure orchard originated from the United States, and it is also the preferred orchard management technology in advanced countries such as Japan, Europe and America. There are many benefits of orchard green manure, which can not only increase the organic matter content of orchard soil and reduce the evaporation of orchard soil moisture, but also adjust the physical and chemical properties of orchard soil aggregate structure, improve the yield and quality of fruit trees, and increase production and income for fruit farmers. However, this technology has not been popularized in China, mainly because green manure in orchards is labor-consuming and time-consuming, which reduces the will of fruit farmers.