A kind of test method of field tube planting fertilizer

Abstract

The invention relates to a testing method of a field pipe planting fertilizer. The testing method comprises the following operation steps: 1, digging d ditches according to a number d of repeating a test; drying soil dug from the ditches with air, and grinding and uniformly mixing to obtain air-dried soil; 2, fully filling water into the ditches and sufficiently wetting soil layers at the bottoms of the ditches after water naturally permeates into the ground; vertically setting two or more PVC (Polyvinyl Chloride) pipes in the ditches; 3, fully filling the air-dried soil into the PVC pipes; 4, filling and leveling up the ditches provided with the PVC pipes with the air-dried soil; 5, planting crops for one season according to conventional fertilizer application and leveling a land; 6, carrying out a fertilizer test on the soil in the PVC pipes, wherein the operation of the test is the same as conventional pot culture experiment operation; planting the crops which are the same as those in the PVC pipes in an open field between the PVC pipes, without applying the fertilizer. The direction of the fertilizer and fertilizer acting effect can be quantitatively researched and the growth condition of field crops can also be really reflected. According to the testing method of the field pipe planting fertilizer, provided by the invention, the repeatability of a testing result is good and the quality of testing data is high.

Description

technical field [0001] The invention belongs to the field of soil fertilizer technology, and in particular relates to a field fertilizer test method. Background technique [0002] Field fertilizer test is an important means of agricultural scientific research. However, there are many problems in the current field fertilizer test method. It cannot guarantee a single difference in the test, and the repeatability of test results is poor. It is difficult to obtain test data with scientific value. Generally, the publication of high-quality articles must rely on long-term positioning experiments, and the results of one-year experiments are difficult to be recognized by peer experts. The one-year field experiment had the following problems: 1. The soil fertility in the test was uneven due to farming operations, crop growth and terrain; 2. The area of ​​the test plot was large and the fertilizer application was uneven; 3. The health quality of the soil was different, and the Differ...

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Problems solved by technology

[0002] Field fertilizer test is an important means of agricultural scientific research. However, there are many problems in the current field fertilizer test method. It cannot guarantee a single difference in the test, and the repeatability of test results is poor. It is difficult to obtain test data with scientific value.

Generally, the publication of high-quality articles must rely on long-term positioning experiments, and the results of one-year experiments are difficult to obtain the approval of peer experts

The one-year field experiment had the following problems: 1. The soil fertility in the test was uneven due to farming operations, crop growth and terrain; 2. The area of ​​the test plot was large and the fertilizer application was uneven; 3. The health quality of the soil was different, and the Different pathogenic bacteria lead to different chances of crop infection in different locations of the community; 4. The soil itself contains a large amount of nutrients, but the amount of fertilization treatment is small, and the error of soil nutrients often exceeds the error of fertilizer treatment

Assuming that the total nitrogen content of the soil is 0.1%, the nitrogen content of each mu of plow layer is calculated as 150,000 kg of soil, and the nitrogen content reaches 150 kg, while the nitrogen fertilizer treatment is generally about 10 kg, and the difference in nutrients caused by the thickness of the soil layer in the field can even exceed the difference in fertilization; 5. Soil and plant samples taken at random are not representative, and the resulting data are hardly representative of the experimental treatments

Although the pot test can ensure uniform soil fertility, the crop growth environment (water, fertilizer, air, heat) is very different from the field, and the soil structure is also different. The field soil has a plow layer, a solid plow bottom layer and a subsoil layer. , the nutrients and water in different soil layers are not the same, the pot test results cannot represent the real results in the field

The results of fertilizer tests obtained by the above two methods are difficult to reflect the real situation in the field. For example, although countless experiments have been done and a lot of manpower and financial resources have been spent, the nitrogen use rate of farmland is still unclear, and the nitrogen use rate is still debated.

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