Boron fertilizer has been widely used in rapeseed production for many years. It has obvious effects on improving the growth and development of rapeseed, and promoting the increase of yield and income of rapeseeds. In particular, the serious effect of boron deficiency on the increase of yield and income of soil is even more pronounced. Generally, it can increase production by 15% to 20%. Although boron fertilizer has been used for rapeseed production for many years, farmers often make mistakes in the application process. First, some farmers only use boron fertilizer in the base fertilizer and ignore the top-dressing of boron fertilizer; the second is only paying attention to flowering spray and flowering. Fertilizer instead of fertilizer for the whole process; Third, it is considered that the application of boron fertilizer at the seedling stage has no effect, and fertilizer spraying at the seedling stage is basically stopped; the fourth is that the amount of boron fertilizer is insufficient but the amount is insufficient; the fifth is not paying attention to the quality of the boron fertilizer, only low content (Effective content is less than 5%), low-priced boron fertilizer, reluctant to use high-grade, high-content, high-quality boron fertilizer. Therefore, symptoms of boron deficiency often appear to varying degrees at various stages of the rape growth process. Brassica napus is very sensitive to boron deficiency, and there are symptoms of boron deficiency at various stages of growth. Boron deficiency at seedling stage, small and fine roots, little or no root hairs, swollen root neck, brown root bark, cracked cortex, purple bar-shaped plaque at the base of leaves, brown leaves, severe growing point gradually withered . Bud period lack of boron, leaf shrinkage, veins and yellowing around, middle leaves dark green, leaf thickening, brittle, rolling, leaf edge first purple, followed by blue-violet, early fall off, heading delay, plant dwarf . The flowering period is deficient in boron, the petals are shrunken, the buds are shrunken and even dry, the pods do not inflate or become deformed, and there is a pubic hernia, commonly known as "flowers but not real." The above problems have manifested in one way or another in different rapeseed areas. In order to correctly and better apply the rapeseed boron fertilizer, at the moment when the rapeseed sowing is approaching, attention should be paid to several tasks. Raising awareness of the need for boron in rapeseeds Firstly, after the application of boron fertilizer in rapeseed, boron can be combined with the polysaccharide component of cell walls to increase the stability of cell walls, promote the synthesis of ribonucleic acid and germination of pollen tubes, and prevent the rapid growth of meristems. Rape is “flowering but not realâ€; the second is to promote the conversion of carbohydrates in rapeseed, accelerate the synthesis of sucrose and hydrolysis of starch; third is to strengthen the control of water on the cell wall, enhance the resistance to cold and disease resistance of rapeseed, and the fourth is to improve The quality of rapeseed can increase oil content by more than 6 percentage points. Multi-application and flexible application of boron fertilizer can not only apply boron fertilizer to a certain period of time but must apply boron throughout. The first is to apply basal fertilizer before planting, 0.2-0.5 kg of boron per acre, or about 1 kg of borax; second, use seedlings to transplant, plant 2–3 days before planting, and spray 0.1%~0.2% of borax solution per acre seedbed. Kilograms, or 0.2% borax rooted when planting; Third, post-plant wintering period, spraying 0.2% Sonic Boron solution, 60 kg per mu; Fourth, spray 0.2% Sonic Boron solution during the bud stage 60-70 kilograms per mu; Fifth, the early flowering time is about 80 kilograms per kilogram of Sulu boron solution. Pay attention to the quality of boron fertilizer Note that the application method should not be greedy for the use of low-level boron fertilizer, and promote the use of high-content boron or Susong boron. When used as a basal fertilizer, it is best to mix with a bio-organic compound fertilizer or a farmyard fertilizer or mix it with an inorganic compound fertilizer. When topdressing, it is necessary to fully dissolve, and second, to control the amount of use, the third must not re-spray, no leakage spray. Dingmin Pharmaceutical supply Prucalopride API and Prucalopride Intermediates with high purity and best price. The main products CAS No are as follows: 748788-39-8, 232941-14-9, 179474-85-2. Sample can be sent if you request. Most of the products are stock available. Also can be custom. Cas 232941-14-9,Prucalopride Intermediates,2-Hydroxy-Benzoate Shijiazhuang Dingmin pharmaceutical Sciences Co.,Ltd , https://www.dingminpharma.com
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