What is the formula for soil testing and fertilization of crops? How to carry out? What's the advantage? What are the technologies?

For the growth of crops, artificial fertilization is essential when the nutrition of the land is not enough. So what is the formula of soil testing and fertilization? How to carry out? What's the advantage? What are the technologies? It is reported that soil testing formula fertilization is based on soil testing and fertilizer field experiments, according to the law of crop fertilizer demand, soil fertilizer supply capacity and fertilizer effect, and on the basis of rational application of organic fertilizer. the application quantity, fertilization period and application methods of fertilizers such as nitrogen, phosphorus, potassium and medium and trace elements were put forward.

How to carry out soil testing and formula fertilization?

1. The method of issuing fertilizer distribution cards: soil samples are collected by agricultural technicians for analysis and testing. According to the test results and the crops to be planted, the proportion card of fertilizer formula is issued to farmers and prepared by themselves.

2. "one bag" fertilizer method: soil samples are collected by agricultural technicians for analysis and testing, the formula of special fertilizer is put forward according to the crop varieties to be planted, and fertilizer production enterprises with high reputation and quality are invited for public bidding for production. Farmers grow one mu of crops and buy a bag of special fertilizer.

What are the benefits of soil testing and formula fertilization?

The main results are as follows: 1. Soil testing and formula fertilization is the combined application of several fertilizers, which can improve the utilization rate of chemical fertilizer.

2. Soil testing and formula fertilization can achieve different soil and crop, different fertilizer formula, pertinence, avoid fertilizer waste and save cost.

3. Soil testing and formula fertilization has obvious effect of increasing yield and income.

4. Soil testing and formula fertilization can improve the quality of agricultural products, improve soil fertility, protect the ecological environment, and improve the ability of disease resistance and insect resistance of crops.

5. Soil testing formula fertilization can prepare high concentration special formula fertilizer according to soil and crops, reduce the amount of fertilizer per mu and reduce labor force.

What are the techniques of soil testing and formula fertilization?

The technology of soil testing and formula fertilization includes five core links and nine key contents of "soil testing, formula, fertilizer distribution, supply and fertilization guidance".

Field experiments.

Field experiment is not only the fundamental way to obtain the best fertilizer amount, fertilization period and fertilization methods of various crops, but also the basic link of screening and verifying soil nutrient testing technology and establishing fertilization index system. Through the field experiment, we mastered the optimal amount of fertilizer applied to different crops, the distribution ratio of basal fertilizer and topdressing fertilizer, the fertilization period and fertilization methods in each fertilization unit, and found out the basic parameters such as soil nutrient correction coefficient, soil fertilizer supply, crop fertilizer requirement parameters and fertilizer utilization efficiency, and constructed crop fertilization model to provide basis for fertilization division and fertilizer formula.

Soil testing.

Soil testing is one of the important bases for the formulation of fertilizer formulation. with the continuous adjustment of planting structure in China, high-yield crop varieties continue to emerge, fertilization structure and quantity have changed greatly, and soil nutrient pool has also changed obviously. The soil fertilizer supplying capacity was understood by testing the nutrients of soil nitrogen, phosphorus, potassium and medium and trace elements.

Formula design.

Fertilizer formula design is the core of soil testing and formula fertilization. By summarizing the field experiments and soil nutrient data, the fertilization regions were divided into different regions; at the same time, according to the similarities and differences of climate, geomorphology, soil and farming system, and combined with expert experience, the fertilization formulas of different crops were put forward.

Correction test.

In order to ensure the accuracy of fertilizer formula and minimize the risk of batch production and large-scale application of formula fertilizer, three treatments of formula fertilization, farmers' habitual fertilization and blank fertilization were set up in each regional fertilization unit. taking the main local crops and their main varieties as the research object, the yield-increasing effect of formula fertilization was compared, the fertilization parameters were checked, the fertilizer formula was verified and improved, and the technical parameters of soil testing formula were improved.

Formula processing.

The implementation of the formula in the field of farmers is the most key link to improve and popularize the technology of soil testing and formula fertilization. At present, there are different modes in different regions, among which the most important and most promising market operation mode is market-oriented operation, factory processing and network operation. This model adapts to the current situation of low scientific and technological quality, small scale of land management and separation of technology and materials of rural farmers in our country.