Boron is one of the indispensable trace elements in the growth and development of rapeseed. Boron participates in the transformation and transportation of carbohydrate in the plant body, as well as the absorption and regulation of water and nutrients. Boron is also a nutrient element essential for the growth and flowering of rapeseed roots, and its yield-increasing effect is particularly obvious. The increase in yield can be as high as about 80%. After boron deficiency in rapeseed, the main symptoms are poor root development, root-necked enlargement, leaf deformity, small and hypertrophy, leaf margin shrinkage and shedding, flowering delay, grain insufficiency, etc., which have a great impact on the yield. No particles are received. If the rape is short of boron, it should be sprayed on the leaves in time, the sooner the better. The experiment showed that spraying boron fertilizer once at the seedling stage increased the yield by about 15% compared to spraying. Spraying once at the seedling stage and early flowering stage increased by 35% from the control field. At present, the commonly used boron fertilizers are borax, boric acid and boron magnesium fertilizer. Borax contains 11.3% of boron, 17.5% of boric acid and boron, boron and magnesium fertilizer contains 1.5% of boron. Spraying boron fertilizer on rape, with borax and boric acid as the best choice, with less dosage, significant increase in production. The concentration of the two solutions is: borax 0.05-0.2%, boric acid 0.025-0.1%. First, use a small amount of warm water to dissolve the boron fertilizer, and then spray enough water on the required amount of water. Spray the fertilizer solution 50-75 kilograms per acre. In order to increase the effect of spray fertilizer, it is best to choose no wind from 4 o'clock to 5 o'clock in the afternoon, when the fertilizer solution evaporation is small, which is conducive to the absorption of leaves. (Zhao Jiafeng) Tri Fold Ramps,Folding Aluminum Ramps,Folding Wheelchair Ramps,Folding Truck Ramps Active Life Healthcare Co.,Ltd , https://www.alh-med.com