1. To prevent excessive application of boron fertilizer Excessive application of boron will increase the cost and labor. Second, it will cause rape poisoning, inhibit growth and development, and therefore rapeseed boron is not more than good. 2. To prevent the late application of boron fertilizer Practice has proved that early application of boron fertilizer rape is far more effective than late, because the application of boron at the seedling stage can promote root growth, is conducive to the normal flower bud differentiation, bud spraying period of boron, there is to promote stem extension, to ensure that the leaves will not be missing Boron becomes red and weakens photosynthesis, especially to ensure normal development of buds and other reproductive organs, avoiding "flowers but not real". 3. To prevent the effect of drought on boron application Rapeseed can only absorb water-soluble boron in the soil. Drought causes loss of water, which will increase the degree of boron deficiency in rape, especially in late rosette and flowering. Therefore, it is the simplest and most effective method to supplement borin by foliar spraying in arid climates. 4 to prevent the purchase of fake boron fertilizer There are many kinds of boron fertilizer on the market, but there are a lot of fake boron fertilizers and some boron boron content is almost zero. Farmers' friends must go to regular agricultural resource stores to purchase quality products to prevent them from being deceived. Practice has proved that the following boron fertilizers are worth promoting in the rapeseed production: First, holding boron and Sonic boron. The effective boron content of boron is high, and the effect is good. It is suitable for basal fertilizers. The sonic boron has high purity, is easily soluble, and has high absorption and utilization efficiency of rape, and is suitable for foliar fertilizer. However, the high cost of boron and Susonic Boron. The second is the five increase of boron fertilizer. Five increase brand boron fertilizer quality, affordable, good effect. Both basic type and spray type can meet the needs of different application methods. The third is borax. Borax is a traditional, popular product with high performance-to-price ratio and good effect. It is suitable for infrastructure and spraying. Producers and distributors are difficult to shoddy and have fewer fake products. 5. Prevent the use of boron instead of other fertilizers Boron is only one of the indispensable trace elements in the growth and development of rapeseed. Boron cannot be used as a substitute for other fertilizers, and it must be applied in combination with nitrogen, phosphorus, potassium and organic fertilizers to produce the best results. Crt Monitoring,Crt Graphic Display Unit,Crt Device Fire Monitoring System,Crt Graphic Display Unit Control Panel LIAONING YINGKOU TIANCHENG FIRE PROTECTION EQUIPMENT CO.,LTD , https://www.tcfiretech.com