Molybdenum is a trace element and soybeans require 100 times more molybdenum than other crops. Molybdenum can promote the formation and growth of soybean nodules, increase the number of root nodules, increase the volume of root nodules, and increase the ability of nitrogen fixation, which in turn increases the chlorophyll content of soybean leaves and enhances the photosynthetic capacity. Molybdenum can also promote the growth of soybean roots, increase the absorption of nutrients, and enhance drought resistance. Therefore, molybdenum has a significant role in promoting the growth and development of soybeans, increasing grain growth and increasing grain weight.
Ammonium molybdate is a commonly used molybdenum fertilizer. It is generally used as a seed fertilizer and can also be used as foliar spray fertilizer. As a seed fertilizer, use 2 grams of ammonium molybdate per kilogram of bean, dissolve it in 5 times of hot water and stir well, then cool and then pick it. Foliar spray fertilizer with 0.05% -0.1% ammonium molybdate solution, spraying in the initial flowering period, generally sprayed 30-50 kg per acre. Molybdenum is not easy to leaching in the soil. If molybdenum is applied excessively or molybdenum is applied frequently, molybdenum will easily accumulate in the soil. The accumulation of molybdenum will cause molybdenum poisoning in soybean plants. Therefore, molybdenum should not be used excessively, nor should it be applied in the same field year after year.
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