Autumn and winter crops, such as rape, broad beans, wheat, potatoes, green manure, and vegetables, are good crops that respond to boron fertilizers. In the absence of boron, crops will appear "flowers but not real", "dry and empty", "branch brown spots", "stem veins cracking", "malformation fruit" and growth point necrosis, dry tip and other symptoms. Therefore, the scientific and rational application of boron fertilizer in crop cultivation is one of the important means to increase the yield and quality.
However, with boron as a trace element, the demand for crops is small, and if it is used in multiple applications, it will cause fertilizer damage. Therefore, scientific methods must be mastered when applying it. First of all, it is necessary to strictly control the amount of application. In general, high-professional base fertilizers have a concentration of 200-500 g/mu, while spray-type boron fertilizers are kept at 1000-1500 times, and the application amount and spraying concentration must not be arbitrarily increased. Secondly, the sustained-release type of boron fertilizer requires uniform application throughout the field, especially on annual cash crops such as rice, rape, cotton, watermelon, and vegetables. Again, the rapid application of boron fertilizer mainly requires controlling the spraying time. Generally, the flowering result crops are selected to be sprayed before flower bud differentiation, before flowering, and after flowering to young fruit, so as to promote flower bud differentiation, pollination, fertilization, and fruits. The purpose of development. At the same time, it is necessary to pay attention to the mixed use of boron and other pharmaceutical agents, and do not mix them to avoid affecting the effect and even producing toxic effects on crops.
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