In recent years, extreme weather has become more frequent, frequent disasters such as cold, drought, and squalor, increased pests and diseases, and lack of effective disaster prevention and mitigation techniques have become the limiting factors that restrict the high yield of rapeseed.
In the production of rapeseed, we recommend a kind of pure natural plant growth regulator “Bi-protection†from Germany to the farmers. Because "Bai Hu" contains a variety of plant endogenous hormones, it can effectively regulate the balance of plant nutrition and hormones, and has affinity with plants. A large number of production practices have proved that it can not only improve the yield of rapeseed but also improve the quality.
Use "Bai Hu" to cultivate strong seedlings. The rapeseed high-yield cultivation and strong seedlings are the foundation. If the drought occurs after the autumn sowing, it is easy to suffer from lack of seedlings and ridges, uneven emergence, and weak seedlings. "Bi-protection" can promote root development, give plants a strong root system, improve the ability of rapeseed to resist drought, and reach the seedlings. In the rapeseed seedling stage (four-leaf stage) combined with insecticides for controlling pests such as cabbage, aphids and other pests, the "Bai Hu" 7500~10000 times liquid leaf spray can improve the quality of the seedlings and promote the robust growth of the plants.
For seedling transplanting rapeseed, if the slow seedling period is too long, it will seriously affect the early growth of rapeseed and reduce the yield of rapeseed. It can be sprayed with 15000 times liquid on the foliar surface after transplanting, which obviously shortens the time of slow seedling and lays a foundation for cultivating strong seedlings.
Can solve the problem of rape damage. Rapeseed is basically based on vegetative growth before winter, and begins to divide flower buds. Over-wintering low temperature often causes different degrees of freezing damage of rapeseed leaves, which can cause the cell gap of the leaves to freeze and suffer. The frozen leaves are very fragile, and the seedlings are frozen to death. Defensive measures In addition to timely filling the winter water, rooting the soil, cover the application of fertilizer, while spraying the "Bi-protection" 5000 times liquid plus chitin, improve the cold resistance of rapeseed, prevent freezing damage and recovery after freezing effect. In the high-efficiency cultivation mode of “Northern rapeseed north shift†in Gansu Province, the pilot application of “Bi-protection†has achieved gratifying results, which can significantly improve the cold tolerance of rapeseed.
Flowers are not strong. The main reason why rapeseed is not flowering is the lack of nutrients in the flowering period. The effective measure to prevent the rapeseed from being strong is to supplement the boron to ensure sufficient supply of boron nutrition during the rapeseed period. It is suitable to spray borax solution with a concentration of 0.02% in the seedling stage, the bud stage and the initial flowering stage respectively. It can also be sprayed with 15000 times of liquid and high-quality boron fertilizer, which can improve the absorption and utilization rate of boron fertilizer and increase the seed setting rate.
Prevent good bacterial disease. Sclerotinia sclerotiorum is the most important disease in rapeseed production, which can reduce the yield of rapeseed by 1~30%. There are many rainfalls during the flowering period, which is the most likely to cause disease epidemics. For the prevention and treatment of pesticides, the compound preparations such as “Bai Hu†plus sclerotial nucleus, carbendazim and thiophanate were selected and sprayed from the first flower to the full bloom period. “Bi-protection†can improve the efficacy of pesticides, inhibit the spore germination of pathogens, and promote cell repair after disease. According to the experiment of the Gansu Provincial Agricultural Reclamation Research Institute, “Bai Hu†can significantly improve the disease resistance of winter rape.
Increase the seed setting rate to increase production. The yield of rapeseed is composed of density, number of effective pods per plant, number of solid grains per corner, and 1000-grain weight. Under the condition of reasonable close planting, the key to increase the number of pods per plant is to increase the number of branching pods. "Bi-protection" breeding seedlings increased the number of main stem leaves, increased branching rate and promoted flower bud differentiation, thereby increasing the number of pods.
The material needed for rapeseed grain filling is mainly derived from the photosynthesis and root activity of the horn peel. “Baihu†can increase the activity of Ru-bosico enzyme, a key enzyme for photosynthesis, increase the chloroplast membrane permeability and enhance the photosynthetic rate. Thereby, the seed can be full and the 1000-grain weight can be increased. Spraying “Baihu†7500~10000 times liquid and boron fertilizer in the buds to the flowering stage, promoting flowering, pods, and fullness of seeds, reducing the number of pods and pods, increasing the seed setting rate, rapeseed The increase in production is as high as 20% or more.
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