How to prevent rape from "flowering and not real"
Rapeseed is very beautiful, but the ultimate goal of planting rapeseed is not to appreciate flowers. How to prevent rape "flower and not real"? Practice has proved that the most effective measure is the foliar application of boron fertilizer. Foliar spray boron fertilizer, the concentration (according to the weight of boron fertilizer) 0.1% ~ 0.3% is appropriate, that is, borax 0.1 ~ 0.3 kg plus 100 kg of water formulated as a boron-containing aqueous solution, even spraying foliar. Spraying should be performed on a sunny evening or in the morning, because the relative humidity at this time, the plant stomata opening is conducive to absorption of rape, and should not be sprayed when dry and windy. Rainfall should be reapplied within 36 hours of spraying. The most critical stage of spraying boron fertilizer in winter rapeseed is seedling stage and bud stage. The effect of spraying boron fertilizer at flowering stage and fruit development stage is poor. This is because the application of boron fertilizer at seedling stage can promote root growth, which is conducive to the normal flower bud differentiation; spraying boron at the bud stage, promotes the extension of stolon, does not cause the leaves to turn green due to lack of boron, weaken photosynthesis, especially Can guarantee the normal development of buds and other reproductive organs, to avoid the occurrence of "flowers but not real." Boron fertilizer was sprayed once at the seedling stage and bud stage to increase the yield. In addition, 1 to 3 days before transplanting rapeseed, spraying boron fertilizer on the seedbed is not only beneficial to rooting after transplanting, but also economical. Foliar application of boron fertilizer, although there is a significant increase in yield, but if the soil is seriously deficient in boron, spray once or twice can not meet the needs of boron on rape, the effect is less than the base. Before sowing or transplanting rapeseed, 0.5 to 1 kg of boric acid per acre and other fertilizers are mixed and used as a base fertilizer and directly applied to the soil. Since boron has an inhibitory effect on seed germination and radicle growth, direct contact of boron fertilizer with seeds should be avoided. In addition, the required amount of boron on rape and the excessive limit of the difference is very small, the excess tends to produce poison, such as reducing the emergence rate, causing dead seedlings, slow growth after emergence, post-spot fruit reduction, yield decline. Electric Eyebrow Remover,Electric Eyebrow Trimmer,Automatic Eyebrow Trimmer,Best Electric Eyebrow Trimmer Shenzhen Jie Zhong Lian Investment Co., Ltd. , https://www.szmeizons.com