What should be paid attention to when applying boron to rape?

What should be paid attention to when applying boron to rape? Please guide boron fertilizer to increase the yield of rape. However, farmers often make some mistakes in the process of application: first, they only apply boron fertilizer in the base fertilizer, ignoring the application of boron fertilizer; second, they use spraying fertilizer at flowering stage instead of the whole process; third, they think that boron application at seedling stage has no effect; fourth, the amount of boron application is insufficient; fifth, only low content (effective content less than 5%) and low price boron fertilizer are used. Therefore, boron deficiency symptoms often occur in different degrees during the growth process of rapeseed. Rape is very sensitive to boron deficiency and has symptoms of boron deficiency in all growth stages. Lack of boron at seedling stage, the roots are few and thin, the root neck is swollen, and the leaves turn brown and die gradually. During the budding stage, boron deficiency, leaf shrinkage, yellow veins and surrounding areas, and purple patches appeared. Boron deficiency during flowering, petals shrink, buds atrophy or even dry, pods are not dilated or deformed, Yin pods appear, commonly known as flowers and unfruitful. In order to apply boron fertilizer correctly and better, three points should be paid attention to: first, to improve the understanding of boron requirement of rape in an all-round way. First, after the application of boron fertilizer, boron can combine with the polysaccharide components of the cell wall, improve the stability of the cell wall, promote the synthesis of ribonucleic acid, the germination of pollen tube, and the rapid growth of meristem, so as to prevent rape from fruiting; second, it can promote the transformation of carbohydrates in rape, accelerate the synthesis of sucrose and hydrolysis of starch; third, it can enhance the control of water in cell wall and enhance the ability of cold resistance and disease resistance of rape. Fourth, it can improve the quality of rapeseed, and the content of oil can be increased by more than 6%. Second, multi-method combined with flexible application of boron fertilizer. Rape must apply boron in the whole process. First, applying basic fertilizer before sowing, applying 0.2-0.5 kg boron per mu or about 1 kg of borax per mu; second, transplanting seedlings, spraying 50 kg of 0.1-0.2% borax solution per mu 2-3 days before transplanting, or soaking with 0.2% borax when planting; third, spraying 0.2% Suele boron solution, 60 kg per mu, during the overwintering period after planting. Fourth, 0.2% of Suzole boron solution was sprayed 60-70 kg per mu at budding stage, and about 80 kg per mu was sprayed at the early flowering stage. Third, pay attention to the quality of boron fertilizer and pay attention to the application method. Advocate the application of high content boron fertilizer. When used as base fertilizer, it is best to be mixed with bio-organic compound fertilizer or farm fertilizer or mixed with inorganic compound fertilizer. When topdressing, first, it should be fully dissolved, second, the dosage should be controlled, and third, it should not be re-sprayed or leaked. Click to get more rape planting techniques click to get more food crop planting techniques