Our Smart Light has a longer lifespan and more complete functions. The life of the smart light is determined by the light decay, and there are four main reasons that affect the luminous decay. 1. The raw materials of the product. The less the impurities, the less the heat dissipation. All our products are made of original brass, and the quality of the products is strictly controlled from the raw materials. Second, the heat dissipation structure of the product. We have more than ten years of work experience in structure research and development personnel. Each product has undergone heat dissipation design, heat dissipation simulation, and heat dissipation experiment to ensure the best heat conduction and heat dissipation of the product. Third, the design of the power supply, the higher the efficiency of the power supply, the better the heat dissipation. Our electronic engineers with more than 15 years of work experience adopt imported chip solutions and use the smallest space to make the power supply with the highest efficiency and the lowest temperature rise. Fourth, for LEDs, we purchase light sources from American CREE or Japan's Citizen to minimize light decay.
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In the late growth stage of soybean, the effect of root-spraying fertilizer production was significant, which was related to the characteristics of soybean fertilizer absorption and soil fertility.
Soybean root fertility changes with the growth of the plant to the deep layer of the soil, that is, the soybean first absorbs the nutrients in the upper layer of the soil in the early growth stage, and the nutrients in the soil below the cultivated layer are mainly absorbed in the late growth stage (reproductive growth). According to the test, the percentage of soybean roots absorbed by 10 cm deep nutrients was 93.3% in seedling stage, 62.9% in branching stage, 36.1% in flowering stage, 26.2% in pod-forming period, and almost 10 cm in roots in the drum stage. Nutrients in the deep soil layer, while the amount of nitrogen, phosphorus and potassium required for flowering, granules and maturity accounts for about 80% of the total. This indicates that the peak season of soybean fertilizer is in the stage of reproductive growth, that is, in the late growth stage. These nutrients are extracted from the soil below the plough layer by roots, and the nutrient conversion and release capacity of the soil below the plough layer is much lower than that of the plough layer. This leads to the inconsistency between the nutrient demand and the soil fertility at the peak of soybean fertilizer demand. Sex. Soybean roots (especially lateral roots) are mainly concentrated in the surface soil, and it is prone to undernutrition and premature aging in the middle and late growth stages, which is the main factor limiting the high yield and stable yield of soybean. Therefore, spraying the nutrient solution outside the roots of the soybean pods can alleviate the contradiction between the peak of soybean fertilizer and the ability of soil fertility, accelerate the accumulation, transformation and transportation of assimilation products, and promote the nitrogen fixation and root system of rhizobium. Vitality, improve roots' ability to take up nutrients.
The preparation method of the nutrient solution is: weigh 0.5 kg of urea, 105 g of superphosphate, 107.5 g of potassium sulfate, 12.5 g of boric acid, dissolved in 25 kg of water, and filtered to be a nutrient solution. Foliar spray should be carried out after 4 o'clock in the afternoon or in the evening, so that the leaves are evenly stained with nutrient solution without flowing, and sprayed 3 times, every interval of 3 to 4 days.
Root-feeding in the late growth stage of soybean
The soybean pods and the bulging stage are root-sprayed, and the grain yield is increased by more than 50%. According to the test of Xiongyue Agricultural College, the soybean pods and the granules were sprayed with nutrient solution, and the grain yield increased by 32.06%~54.01%.
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