The cultivation time of autumn sorghum vegetables is short and the growth is fast. However, whether it is necessary to fertilize the vegetables in the autumn saplings is a lot of controversy. Whether the fertilizer is applied or not should be analyzed from the amount of base fertilizer applied:

When the base fertilizer is applied adequately, it is not necessary to apply fertilizer at the seedling stage.

The base fertilizer is sufficient, all kinds of nutrients are available, and the bottom fertilizer is sufficient. The nutrition in the soil can fully meet the needs of vegetable seedling growth, so at this time, there is no need to apply fertilizer in the seedling stage, otherwise excessive fertilization will cause root burning. After the vegetables are planted, some organic fertilizers or chemical fertilizers are gradually decomposed by soil microbes, releasing nutrients that can be directly used by the roots of the vegetables. At this time, with the water topdressing, a large amount of nutrients will be accumulated in the rhizosphere of the young vegetables, not only It will not be absorbed by the roots, but will cause the roots to return to the nutrients, resulting in root injury. Moreover, the use of more nitrogen fertilizer during the seedling period may also result in the growth of vegetable seedlings, long jointing of plants, and shallow rooting under the roots. The main consequences of long plant growth are poor flower bud differentiation and delayed flowering. Therefore, if the application of the base fertilizer is sufficient, it is not necessary to topdress at the seedling stage.

Insufficient application of base fertilizer, fertilizer application is required

Some vegetable farmers do not turn over the ground to plant vegetables directly after the top crops are pulled out of the garden, or the application of the base fertilizer in the new sheds is insufficient. Originally, the base fertilizer is not sufficient, and after planting, the fertilizer is not replenished in time, and the growth of vegetable seedlings will be greatly affected. Therefore, it is necessary to apply the fully water-soluble fertilizer in the seedling period in time, and use 5-8 kg per acre.

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