Applying γ-PGA fertilizer synergist 10-50g per acre, it can promote the accumulation of main nutrient elements, promote root development and increase disease resistance.
The application of γ-PGA can generally increase the efficiency of chemical fertilizer application by 10-30%, increase the yield of crops such as tobacco and vegetables by 8-31%, increase the yield of rice, improve the quality of crops, and achieve a better sustained release effect on fertilizers. The sustained release time of the fertilizer in the soil is extended by about 4 times compared with the traditional fertilizer, which promotes the absorption of the crop and also inhibits the rapid decomposition and loss of the fertilizer component.
Especially in the low-fertility soil, the application effect is better, and the yield increase is larger. It can directly reduce the amount of fertilizer by more than 20%, and at the same time, it is degraded by microorganisms in the soil, and the environmental pollution caused by excessive or improper application of fertilizer is greatly reduced. Improve the ecological environment of the countryside.
The field plot experiment of γ-PGA compound fertilizer showed that the yield of pakchoi could be increased by more than 20%, and the yield of lettuce could be increased by more than 15%. The tobacco seedling hydroponic test and pot experiment showed that γ-PGA could increase the yield of tobacco, the hydroponic test increased by more than 15%, and the pot experiment increased by more than 20%.
After 2 times of PGA with 50, 100, 200 mg/L, the yield of strawberry increased by 30.4%, 29.5% and 19.9% ​​compared with the control, which produced a significant yield increase effect. After the strawberry seedlings were planted, the 100mg/L PGA treatment accelerated the growth rate of the roots of the plants. The average root length was significantly different from the control; the leaf thickness was increased, and the leaf thickness was significantly different from the control; The soluble solids increased by 2.6%, 11.4% and 3.9%, respectively. The results of colorimetric test showed that the L value of fruit, the C value of coloring intensity and the red coloring value a increased compared with the control after 100 mg/L PGA treatment. The surface of the fruit is more lustrous.
Agricultural γ-PGA product form and application method
At present, the agricultural γ-PGA product forms mainly include γ-PGA nutrient solution and instant γ-PGA full essence dry powder. The method of application is as follows: 20 g/mu γ-PGA (effective substance content), which can be applied alone or in combination with other fertilizers.
Both γ-PGA products use low molecular weight γ-PGA as the main raw material, and γ-PGA nutrient solution has the characteristics of strong water retention, easy absorption, and long-term sustained release. The main functions are as follows:
(1) Enriching nutrients and improving fertilizer utilization rate;
It has the characteristics of anionic surfactant. On each residue of its long chain of protein, there is a free negatively charged carboxyl group, which has strong chelation function for positive electrotrophic segregation. The adsorption exchange capacity with nutrient segregant is natural soil. About 100 times, it reduces the leaching and volatilization of nutrients. While enriching nitrogen, phosphorus and potassium, it also enriches the micro-nutrients such as calcium, magnesium, molybdenum and zinc, which satisfies the various needs of crops and greatly improves the soil. The supply capacity of nutrients. After use, the utilization rate of nitrogen fertilizer is increased by 50~60%, the utilization rate of phosphate fertilizer is increased by more than 5%, the utilization rate of potassium fertilizer is increased by 15~20%, the fertilizer can be saved by 10~20% per mu, and the symptoms of deficiency are not easy to occur.
(2) Long-term slow release function
The adsorption and sequestration functions of nutrients are stored, and the nutrients temporarily used by plants are stored and slowly released as the crop grows and develops, so as to meet the nutrient demand in the middle and late crops, avoid premature aging and de-fertilization, and reduce the number of top dressings. And the amount of topdressing, the basic fertilizer can be applied to the food crops to meet the nutritional needs of the whole growing season. There is no need to topdress, which greatly reduces the labor intensity.
(3) Improve soil physical and chemical properties
The γ-PGA nutrient solution promotes the development of roots and also increases the amount of organic matter recovered by the soil. After use, the soil organic matter content increased by more than 10%; it is conducive to the formation of soil aggregate structure, the physical clay content of the particle size between 0.005~0.001mm increased by 1.73~3.13%; the soil bulk density decreased by 3.73%. The product has strong water absorption, which can increase the water content of 0~20cm soil layer by 1.5~2.8%, and increase the water content of 20~40cm by 1~1.3%, thus improving the drought resistance of crops. The increase of organic matter content and the decrease of capacity greatly improve the water retention and fertilizer retention capacity of the soil, and are beneficial to crop metabolism and soil warming in winter.
(4) Strongly promote root development
PGA nutrient solution contains beneficial phytohormones such as auxin and cytokinin produced by microorganisms, which can effectively promote the development of roots, grow longer roots and more root hairs, increase root surface area and increase crop absorption. The ability of nutrients enhances the ability of crops to resist drought, cold, disease and other stresses, and has a certain ability to resist low temperatures. This feature increases the yield of crops such as tuber and tubers, such as potatoes, sweet potatoes, ginger, garlic, onions, radishes, and peanuts.
(5) Improve crop yield and quality
It is an essential nutrient for crops. The coordinated supply of crop nutrients can promote protein synthesis, early maturity, improve product quality, avoid malnutrition and use of hormones to produce deformed fruit, cracked fruit and poor fruit color. After using this product, the protein content of corn increased by 3~6%, the protein content of wheat increased by 20~30%, the soluble sugar of tomato increased by 0.5~1%, the crude protein increased by about 0.1%, and the sugar content of fruit increased by 10~20%. The level of fruit increased, the sugar content of watermelon increased by 8~10%, the glucose content increased by about 10%, the tobacco first-grade smoke increased by about 10~15%, and the proportion of upper-middle smoke increased by about 6%.
(6) Increase production and harvest
When used in combination with chemical fertilizers, grain crops can be increased by 10-15%, vegetables by 30-60%, eggplant crops by 10-15%, forages by 30%, and oil crops by about 10%.
(7) Environmentally friendly
The γ-PGA nutrient solution itself is a nutrient substance, has no toxic side effects, and has no residual toxicity in the soil.
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