Three points should be mastered in the application of boron fertilizer in rapeseed
Rape is a boron-loving crop, especially Brassica napus, which is particularly sensitive to boron nutrition. Boron deficiency can lead to poor growth of rapeseed, especially the degradation of flower buds and pods, resulting in "flowers and unreal" phenomenon, resulting in a significant reduction in rapeseed yield, even in severe cases. The content of boron in the soil of rapeseed production areas is mostly low, which cannot meet the needs of rape growth. Therefore, it must be supplemented by artificial application of boron, which is a very important measure for rapeseed production. However, the following issues should be noted in the application of boron in rapeseed:
First, we must strictly control the amount. Although boron is a necessary nutrient for the growth of rapeseed, it is a trace element and must be strictly controlled. It is not as much as possible. If boron fertilizer is indiscriminately, it will not only promote the growth and development of rapeseed, but will have a serious inhibitory effect on the germination, emergence and growth of rapeseed seeds, resulting in "boron poisoning". In general, the base fertilizer should be 0.5-1 kg per 667 square meters of borax, and the surface should be sprayed with 50-kg of borax solution of 0.2-0.4% per 667 square meters.
The second is to master the application method and timing. Boron deficiency can cause rapeseed to be "flowery and unreal", so the best effect is to spray boron during flowering. It is well known that boron is required for the entire growth stage of rapeseed, and it is generally preferred to spray boron at the seedling stage and the bud stage. According to the test: boron is sprayed during flowering, and the effect is poor; boron is basically ineffective during grain formation. The reason is that the application time is too late, the physiological lesions in the body are basically formed, and boron application has not helped.
The third is to use high quality boron fertilizer. At present, there are many kinds of boron fertilizer products sold in the agricultural capital market, and the quality is different. Some boron fertilizers appear to have the same surface as high-quality boron fertilizers, but actually contain a small amount of boron, and some contain almost no boron. The application of unqualified boron fertilizer not only causes direct economic losses, but also has a serious impact on the growth and yield of rapeseed. Therefore, remind farmers friends to remember when buying boron fertilizer! (China Fertilizer Information Network)
First, we must strictly control the amount. Although boron is a necessary nutrient for the growth of rapeseed, it is a trace element and must be strictly controlled. It is not as much as possible. If boron fertilizer is indiscriminately, it will not only promote the growth and development of rapeseed, but will have a serious inhibitory effect on the germination, emergence and growth of rapeseed seeds, resulting in "boron poisoning". In general, the base fertilizer should be 0.5-1 kg per 667 square meters of borax, and the surface should be sprayed with 50-kg of borax solution of 0.2-0.4% per 667 square meters.
The second is to master the application method and timing. Boron deficiency can cause rapeseed to be "flowery and unreal", so the best effect is to spray boron during flowering. It is well known that boron is required for the entire growth stage of rapeseed, and it is generally preferred to spray boron at the seedling stage and the bud stage. According to the test: boron is sprayed during flowering, and the effect is poor; boron is basically ineffective during grain formation. The reason is that the application time is too late, the physiological lesions in the body are basically formed, and boron application has not helped.
The third is to use high quality boron fertilizer. At present, there are many kinds of boron fertilizer products sold in the agricultural capital market, and the quality is different. Some boron fertilizers appear to have the same surface as high-quality boron fertilizers, but actually contain a small amount of boron, and some contain almost no boron. The application of unqualified boron fertilizer not only causes direct economic losses, but also has a serious impact on the growth and yield of rapeseed. Therefore, remind farmers friends to remember when buying boron fertilizer! (China Fertilizer Information Network)
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