Organic fertilizer is an important supplement in agricultural production, which can provide a large amount of organic matter and rich nutrients, providing necessary nutrients for the growth and development of crops. However, there are many types of organic fertilizers on the market, and different types of organic fertilizers also have certain differences in supplementing organic matter. So, which kind of organic fertilizer is more effective in supplementing organic matter?

First of all, cow manure is a common organic fertilizer. It is rich in organic matter and nutrients such as nitrogen, phosphorus, and potassium. It can provide the nutrients needed by crops and is effective in supplementing organic matter. The organic matter content in cow manure is as high as more than 30%, and because cow manure has been fermented, the organic matter is more easily absorbed and utilized by crops. Therefore, the use of cow manure can effectively increase the organic matter content of the soil, improve the soil structure, and promote the growth and development of plants.

Secondly, chicken manure is also a common organic fertilizer with high organic matter content and various nutrients. Chicken manure has a high organic matter content and is rich in nutrients such as nitrogen, phosphorus, and potassium, which can meet the nutrient needs of crops. At the same time, chicken manure also has good water and fertilizer retention properties, which can improve soil texture, increase soil fertility, and improve the soil's water and fertilizer retention capacity. Therefore, chicken manure is also a good choice for supplementing organic matter.

In addition to cow manure and chicken manure, soybean bran fertilizer, decomposed compost, rice straw, etc. are all common organic fertilizers, and they all have certain effects in providing organic matter. Soybean bran fertilizer is rich in organic matter and nutrients, which has certain effects on improving soil fertility and increasing crop yields. Mature compost is an organic fertilizer obtained by composting plant residues. It is rich in organic matter and nutrients and is very beneficial to improving the soil structure. Rice straw can be made into organic fertilizer after deep processing, which contains a large amount of cellulose and organic matter, which can effectively increase the organic matter content of the soil.

To sum up, different types of organic fertilizers have certain effects in supplementing organic matter. Cow manure and chicken manure are common organic fertilizers that are rich in organic matter and nutrients and can effectively increase the organic matter content of the soil. In addition, soybean bran fertilizer, decomposed compost and rice straw are also good choices for supplementing organic matter. Therefore, when choosing organic fertilizers, comprehensive considerations should be made based on crop growth needs, soil conditions and economic conditions, and the most suitable organic fertilizers should be selected to supplement the organic matter of the soil.