Rapeseed only blooms, and the phenomenon of incompetence is called flowering. In the process of growth and development of rapeseed, due to improper fertilization and management, there are often more flowering, less joint angles or flowers, which have a greater impact on yield. In order to seize the high yield of rapeseed, it is necessary to promote more flowering and more seeding of rapeseed. Beware of flowers.
The main reason for rape failure is the fact that spring rape enters the period of vegetative growth and vigorous reproductive growth, and the demand for boric acid increases. In particular, there is no supply of boron fertilizer during sowing and seedling stage, and boron nutrient supply is insufficient during flowering period of rapeseed. Flowers are not real.
Brass rapeseed lack of boron, the performance of the plant: boron deficiency at seedling stage, leaf thickening, rewinding, shrinking, dark green leaves. Borrelia lack of boron, buds withered, yellow-brown leaves, slow growth, short stems fine. Boron nutrition during flowering is inadequate, the flower color is yellowish, the inflorescence is shortened, the flowering is slow, the branches are branches, only flowering, the seeds are not strong, the grains are thin, and the pods are shortened.
The main measure to prevent rapeseeds from failing is to supply enough boron nutrition to ensure sufficient supply of boron nutrition during flowering. The specific method is: in the seedling stage, bud stage, early flowering period, each spray a 0.3% -0.4% borax solution. The borax uses two dilutions. The borax is first dissolved in a small amount of warm water and diluted with appropriate amount of water. Spray fertilizer 50-60 kg per 667 square meters. Severe boron-deficient fields can be sprayed once every 7-10 days in the early flowering period. It can effectively prevent and control flowers, increase the number of pods in rapeseeds, increase grain size, and increase yield.
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