Broomcorn floating-seedling nutrient solution and application thereof

Abstract

The invention discloses a broomcorn floating-seedling nutrient solution. The broomcorn floating-seedling nutrient solution consists of, by weight, N 12.5-13.5%, P 11.5-12.5%, K 2-20%, alginic acid 2-3%, humic acid 2-3%, boron 0.4-0.6%, magnesium 0.1-0.12%, zinc 0.1-0.12%, copper 0.08-0.11% and the balance water and is prepared by weighing components according to the proportion and mixing the components evenly. By adopting the broomcorn floating-seedling nutrient solution, the seepage force and the diffusivity of the nutrient solution are greatly enhanced in seedling cultivation, accordingly a seedling emergence period is shortened greatly, the emergence rate and the emergence quality are improved, and the cost is reduced. In addition, the nutrient solution is suitable for high-altitude low-temperature seedling cultivation.

Description

technical field [0001] The invention relates to a nutrient solution for floating seedling cultivation, in particular to a nutrient solution for floating seedling cultivation of sorghum. Background technique [0002] With the continuous development of agricultural technology, seedling raising technology is also showing a trend of rapid development. In order to shorten the seedling raising period, improve seed germination rate, emergence rate and seedling quality, floating seedling raising has become a new way of raising seedlings. Floating seedling raising is a seedling raising method that floats a foam tray equipped with a light seedling raising substrate on the water surface, sows seeds in the substrate, and seedlings take root and grow in the seedling raising substrate, and can absorb water and nutrients from the substrate and water bed. Beginning in the late 1980s, American Tobacco adopted the floating seedling method for seedling cultivation. Compared with the tradition...

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Problems solved by technology

For floating seedlings, the most critical technologies include floating seedling substrates, floating seedling nutrient solutions, etc. Among them, the floating seedling nutrient solution is particularly important for the improvement of seedling cultivation period, emergence rate and emergence quality, such as Chinese patents with application numbers 201210134287.8 and 01107070.6 application, but the currently disclosed nutrient solution for floating seedlings is not suitable for floating seedlings of sorghum, especially for Luzhou Gulin, which is mainly distributed in areas with an altitude of 500m-1000m, where the temperature is low during sorghum seedling cultivation, the growth of sorghum seedlings is slow, and the transplanting period is delayed Problem: In areas with an altitude of 500m, conventional seedlings start around March 20 every year, and the temperature is around 10°C or even lower. As the altitude continues to rise, the temperature continues to drop, and the growth of seedlings is slower, which affects the transplanting period

[0004] In view of these situations, the inventor of the present application has carried out a large amount of research, obtained good progress, and introduced a kind of new sorghum floating seedling raising nutrient solution above " farm science and technology ", and the composition of this nutrient solution is: (N:P:K=15:15:15 compound fertilizer 150g+Yongzhuang (chelated state water-soluble neutral compound fertilizer, plants can absorb at low temperature of 6-8°C) 5g+100% fertilizer (humic acid) 1 gram + Kepke (alginic acid water-soluble fertilizer) 1 gram. This nutrient solution can solve the problems of strong seedlings, uniform seedlings, and high seedling rate when combined with other cultivation techniques. However, this nutrient solution still has the following disadvantages: 1. Possibility The formula composition and proportion of the nutrient solution are not optimal, and the emergence period, emergence rate and quality of the seedlings are still unsatisfactory; 2. The nutrient solution is formulated with several finished fertilizers, because Yongzhuang, Baifei and Kepke are all It is a finished fertilizer with high cost; 3. The penetration and diffusibility are not ideal. The nutrient solution may have poor penetration and diffusibility of the plant due to the poor pigment and its ratio.

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