First, seedlings of melons are transplanted from the seedbed to the field. The absorption function of the roots is reduced, and the fertilizer is very close to the roots of the seedlings, which can easily injure the seedlings and cause the survival rate to decline. In particular, those seedlings that have applied nitrogenous fertilizers are more severe if they suddenly encounter heavy rain after transplanting.
Secondly, it takes a process to dissolve the fertilizer in the soil. If the fertilizer is transplanted while fertilizing, because the fertilizer is not fully dissolved in the soil yet, the seedling root system can hardly absorb the nutrients in the soil, slowing the seedling growth is very slow, especially in poor sensation. When the seedlings do not receive nutrition for a long period of time, it is easy to cause weak seedlings and weak seedlings, and thus become infected.
Therefore, when transplanting seedlings of young vegetables, it is best to apply the base fertilizer 10 to 15 days in advance according to soil fertility and crop type and seal the soil. When the seedlings are transplanted into the vegetable seedlings, the fertilizer is dissolved in the soil. The roots of the seedlings can quickly absorb the nutrients in the soil. After this transplanting, the fertilizer will not aggregate into a pile and cause burning.
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Shandong Shengli Bioengineering Co., Ltd , https://www.shenglipharm.com