Application of polyglutamic acid in agricultural production

1. Application of polyglutamic acid fertilizer synergist in vegetable planting

Experimental time: March-May 2010

Experimental method: The cell test of polyglutamic acid fertilizer synergist was mainly carried out in a greenhouse. At this time, the experimental method is to mix different amounts of crude polyglutamic acid extract (provided by Nanjing University of Technology) with fertilizer, and then apply the fertilizer adsorbed with polyglutamic acid as the base fertilizer of the crop, and the later field management is the same as the Daily management of crops.

Comparison of application of polyglutamic acid fertilizer synergist in vegetable planting

Comparison of application of polyglutamic acid fertilizer synergist in vegetable planting

Experimental results: Polyglutamic acid has obvious yield and fertilizer-saving effects on various crops, and there is no experiment to increase yield. The yield of polyglutamic acid treatment is also comparable to the control treatment using 100% base fertilizer. The results are shown in Table 1.

Growth effects of various crops after using polyglutamic acid

Table 1: Growth effects of various crops after using polyglutamic acid

Second, the application of polyglutamic acid fertilizer synergist in rice planting

Experimental time: May-August 2009

Experimental method: The test crop was rice cultivar 131, the transplanting size was 30×10 cm, the number of transplanted plants per hole was 5-7, and the date of transplanting was May 23, 2008. Approximately 75 grams of crude polyglutamic acid is blended in the fertilizer used per acre. The specific fertilization amount and results are shown in Table 2.

EXPERIMENTAL RESULTS: Rice field results showed that treatment with 20% weight loss was comparable to control, 40% of treatments were weak and control, and treatment without weight loss increased polyglutamate was better than control.

Field investigation data of polyglutamic acid fertilizer effect test

Comparison of application of polyglutamic acid fertilizer synergist in rice planting

Application of Polyglutamic Acid Fertilizer Synergist in Rice Planting

Field investigation data of polyglutamic acid fertilizer effect test

Application of Polyglutamic Acid Fertilizer Synergist in Corn Planting

Note: Polyglutamic acid blending fertilizer formula is: N 23.3%, P2O5 10%, K2O 17.3%, 0.25% polyglutamic acid (PGA); Treatment 1: Conventional fertilization; Treatment 2: Conventional fertilization and PGA application; Three: increase the application of PGA and lose weight 20%; treatment four: increase the application of PGA and lose weight 40%.

Third, the application of polyglutamic acid fertilizer synergist in corn planting

Experimental time: June-November 2009

Experimental method: The test crop is corn, treatment 1: 10 kg of nitrogen fertilizer per mu; treatment 2: 10 kg + 5 g polyglutamic acid per mu; treatment 3: 20 kg per mu of nitrogen fertilizer; treatment 4: 20 kg per mu of nitrogen fertilizer 5 g polyglutamic acid. Fertilization method: nitrogen fertilizer and polyglutamic acid crude product blended and applied.

The experimental results showed that the plant height of the treated two and the treated four maize plants increased by 3.7% and 5.6%, respectively, and the yield increased as shown in Table 3. At the same time, the budget for the application of polyglutamic acid to corn fields was budgeted. According to the corn experiment conducted in Sunjiazhuang Village, Donggang Town, Qinhuangdao City, Hebei Province in 2008, the addition of polyglutamic acid can reduce the use of chemical fertilizer by more than 10%. The yield of corn increased by more than 6%, the input of mu was 11.25 yuan, and the increase of mu was more than 40 yuan. The results are shown in Table 4.

Application of Polyglutamic Acid Fertilizer Synergist in Corn Planting

Experimental time: March-July 2009

Experimental method: In the top dressing stage, the effects on the yield and quality of tobacco leaves were investigated by adding different concentrations of polyglutamic acid to the special fertilizer for tobacco. The test group (1 mu) and the control group (1 mu) were planted and the field management was the same. In the experiment, a group of topdressing period was applied with 0.1% polyglutamic acid, the test group 2 polyglutamate was added in an amount of 0.08%, the test three groups were added with 0.05% polyglutamic acid, and the control group was applied with ordinary fertilizer. .

Experimental results: the application of fertilizers with different concentrations of polyglutamic acid for tobacco leaves, the yield of tobacco leaves, the middle and upper smoke rate and the output value were significantly improved, and the special fertilizer for tobacco leaves with 0.1% polyglutamic acid added was the best, which made The output of flue-cured tobacco increased by 18.57%

Effect of Different Polyglutamic Acid Addition on the Yield of Flue-cured Tobacco

Effect of Different Polyglutamic Acid Addition on the Yield of Flue-cured Tobacco

γ-PGA can increase the absorption of nutrients by crops, increase fertilizer efficiency, increase yield and improve quality. γ-PGA is used as a fertilizer synergist, and the properties of the biodegradable absorption enhancer are fully utilized and utilized. It can further increase the yield of crops, and can also provide a good sustained release effect on fertilizers, so that the release time of fertilizers in the soil is about 4 times longer than that of traditional fertilizers. While promoting the absorption of crops, it also inhibits the rapid decomposition and loss of fertilizer components. When γ-PGA is used, the utilization rate of nitrogen fertilizer can be increased by 60.3% on average, and the utilization rate of phosphate fertilizer can be increased by 5.3% on average. The average can be increased by 16.7%, and the comprehensive direct reduction of fertilizer use is more than 20%. Reducing the environmental pollution caused by excessive or improper application of chemical fertilizers has a significant effect of increasing yield and reducing fertilizer.

Website: Polyglutamic acid in agricultural production

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