Soybean soybean is a crop that requires more nitrogen. Although it has nitrogen fixation by rhizobium, it should be topdressed during the growth period. Usually, nitrogen fertilizer is applied once in the early flowering stage of soybean, which can reduce the rate of falling and falling, and increase the grain weight. Increase production. In the pod-forming period of soybean, one extra-root top dressing can be carried out, that is, the multi-micro-fertilizer is sprayed on the foliar surface, and the yield increasing effect is more obvious.
Potatoes can generally be topdressed before the flowering stage of the potato. Early-maturing varieties are suitable for topdressing at the seedling stage. The mid-late and late-maturing varieties are better applied before the buds, which not only improves the yield but also improves their quality.
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