The winter rapeseed has about 10 large leaves, green leaves and red-edged seedlings, which can effectively resist freezing damage, and because there are a certain number of large leaves, the total number of main leaves increases, the first branch increases, and high yield Have a certain foundation. Therefore, according to the characteristics of rapeseed and the law of fertility, the following aspects should be mastered in cultivation:
First, master the principle of fertilization based on the principle of fertilization during the year. The main focus of fertilization should be 60% to 70% of the total fertilizer amount during the year. On the basis of applying the root fertilizer, early application of seedling fertilizer and re-application Fertilizer, apply fertilizer, skillfully apply strong fertilizer, increase phosphorus and boron fertilizer. Phosphate fertilizer should be applied as early as possible. If no boron fertilizer is sprayed at the seedling stage, boron can be sprayed once in the seedling stage and the initial flowering stage. Boron is sprayed at the seedling stage, and boron can be sprayed once in the initial flowering stage. It is necessary to prevent the winter from growing, the premature closure, the consumption of nutrients, the late release, the premature aging, and the low yield. Therefore, the fertilizer should be based on organic fertilizer (such as the use of chemical fertilizers, the number should be controlled to prevent excessive tenderness). If the base fertilizer is insufficient, it is necessary to pay attention to the application, and the quantity should also increase.
Second, rapeseed winter strong spring hair promotion measures 1. Timely ploughing to promote early hair cultivating loose soil can promote soil weathering, increase soil permeability, ventilation to promote roots, increase temperature to accelerate fertilizer decomposition, but also increase drought resistance, and promote root system Develop in depth. Therefore, it is generally required that weeding and weeding should be carried out in several stages after transplanting to facilitate early development.
2. Timely soil, drought resistance, drainage and anti-freeze damage combined with application of fertilizer, good soil preservation and antifreeze. Rapeseed is not drought-tolerant, as the saying goes, "winter winter rapeseed dry winter wheat." Insufficient water, roots, leaf growth and flower bud differentiation will all be affected. In case of dry weather, the surface is white and should be drought-resistant. However, in the case of low-humidity or rainy conditions, the drainage and drainage should be done well to prevent the roots from being blocked, the leaves are red, the yellows fall off, and even the dead seedlings are caused.
First, master the principle of fertilization based on the principle of fertilization during the year. The main focus of fertilization should be 60% to 70% of the total fertilizer amount during the year. On the basis of applying the root fertilizer, early application of seedling fertilizer and re-application Fertilizer, apply fertilizer, skillfully apply strong fertilizer, increase phosphorus and boron fertilizer. Phosphate fertilizer should be applied as early as possible. If no boron fertilizer is sprayed at the seedling stage, boron can be sprayed once in the seedling stage and the initial flowering stage. Boron is sprayed at the seedling stage, and boron can be sprayed once in the initial flowering stage. It is necessary to prevent the winter from growing, the premature closure, the consumption of nutrients, the late release, the premature aging, and the low yield. Therefore, the fertilizer should be based on organic fertilizer (such as the use of chemical fertilizers, the number should be controlled to prevent excessive tenderness). If the base fertilizer is insufficient, it is necessary to pay attention to the application, and the quantity should also increase.
Second, rapeseed winter strong spring hair promotion measures 1. Timely ploughing to promote early hair cultivating loose soil can promote soil weathering, increase soil permeability, ventilation to promote roots, increase temperature to accelerate fertilizer decomposition, but also increase drought resistance, and promote root system Develop in depth. Therefore, it is generally required that weeding and weeding should be carried out in several stages after transplanting to facilitate early development.
2. Timely soil, drought resistance, drainage and anti-freeze damage combined with application of fertilizer, good soil preservation and antifreeze. Rapeseed is not drought-tolerant, as the saying goes, "winter winter rapeseed dry winter wheat." Insufficient water, roots, leaf growth and flower bud differentiation will all be affected. In case of dry weather, the surface is white and should be drought-resistant. However, in the case of low-humidity or rainy conditions, the drainage and drainage should be done well to prevent the roots from being blocked, the leaves are red, the yellows fall off, and even the dead seedlings are caused.
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