Nutrient release testing method of boron-containing polymer slow-release fertilizer

Abstract

The invention provides a nutrient release testing method of a boron-containing polymer slow-release fertilizer in the technical field of fertilizer preparation. The method comprises the following steps that at the temperature of 25 DEG C, a plurality of samples each including 5.0 g of the boron-containing polymer slow-release fertilizer are weighed respectively to be placed in polyethylene bottleseach containing 100 mL deionized water, and sampling is conducted on the 1st day, 3th day, 5th day, 7th day, 15th day, 30th day, 45th day, 60th day, 90th day and 120th day after arrangement respectively for testing, and each sample is filtered with a funnel with a sand core IV, the fertilizer obtained after filtration is put back to the original bottles respectively and continues to be cultured by adding 100 mL fresh deionized water, and each processing is repeated three times. The preparation method for preparing the slow-release fertilizer is more reliable.

Description

technical field [0001] The invention relates to the technical field of fertilizer preparation, in particular to a nutrient release test method for a boron-containing polymer slow-release fertilizer. Background technique [0002] Looking at the development of fertilizers at home and abroad, it can be seen that slow-release fertilizers are ideal fertilizers for developing sustainable ecological agriculture, improving fertilizer utilization rates and causing less environmental pollution. At present, the domestic research on slow-release fertilizers has made some progress, but there are still some problems, mainly as follows: (1) The price of slow-release fertilizers is generally high, which limits their popularization and application. Currently, they are mainly used for flowers, Markets such as lawns and golf courses; (2) Most of the slow-release fertilizers currently used in the market are coated slow-release fertilizers. This fertilizer is not only expensive, but most of the ...

AI Technical Summary

Problems solved by technology

At present, the domestic research on slow-release fertilizers has made some progress, but there are still some problems, mainly as follows: (1) The price of slow-release fertilizers is generally high, which limits their popularization and application. Currently, they are mainly used for flowers, Markets such as lawns and golf courses; (2) Most of the slow-release fertilizers currently used in the market are coated slow-release fertilizers. This fertilizer is not only expensive, but most of the coating materials are difficult to degrade, and remain in the soil after the fertilizer nutrients are completely released. (3) There are 17 types of nutrients necessary for plant growth, including macronutrients and micronutrients, but the nutrients contained in slow-release fertilizers are single, and most reports are Nitrogen-containing slow-release fertilizers cannot meet the needs of crops for phosphorus, potassium and trace elements other than nitrogen

[0003] Although micro-fertilizers have developed rapidly in recent years, there are also some problems in the application: (1) trace elements exist in the form of metal ions in trace element compound fertilizers, which are easily solidified by the soil, making the fertilizer effect of trace elements ineffective. (2) Water-soluble metal chelates can be used as micro-fertilizers to obtain obvious yield-increasing effects, but the high cost limits their application

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