Talking about spinach watering and fertilizing copywriting

How to scientifically fertilize spinach?

Fertilization before overwintering Generally speaking, strict fertilization management of spinach can achieve high yield. If spinach seedlings grow vigorously in winter, 3000 kilograms of decomposed organic fertilizer should be applied. When spinach seedlings grow to 2-4 leaves, appropriate amount of nitrogen fertilizer should be applied to make the seedlings strong.

2. After spring, in order to delay bolting, fertilization and watering should be carried out at the same time after turning green, and nitrogen fertilizer should be applied again to improve the nutritional growth rate of spinach. The soil with poor fertility should be fully applied with base fertilizer and nitrogen fertilizer, and reasonably increased with phosphorus and potassium fertilizer.

3. Fertilize in spring and summer. Fertilization in spring and summer usually depends on the fertility of the original soil and the residual effect of fertilization on the stubble vegetables. No base fertilizer or less chemical fertilizer. During this period, nitrogen fertilizer needs to be applied at the top. Generally, after the spinach seedlings grow to 2-3 true leaves, apply 15-20kg ammonium sulfate or 9- 12kg ammonium nitrate to the top of each acre, and water them together.

4. Fertilization of Autumn Spinach Autumn Spinach is sown in high temperature season in summer. To choose heat-resistant spinach varieties, the amount of fertilizer and water is very important. Leaves grow rapidly at seedling stage, and nitrogen fertilizer should be applied once or twice at later stage. At this point, the main points of spinach fertilization technology are introduced here. I believe everyone wants to grow high-yield spinach, but it is very important to do a good job in fertilization management.

5. Base fertilizer

It takes a long time for spinach to mature from sowing, so when planting spinach in winter, it is necessary to apply sufficient base fertilizer. Due to the low temperature in winter, the soil fertility decreases, and the lack of soil fertility will lead to the fertilization of spinach, which will have a certain impact on the germination and emergence of spinach. Base fertilizer should be applied in moderation, not too much, otherwise it will easily grow vigorously. Base fertilizer can be fully decomposed farm manure, mixed with a certain amount of phosphorus and potassium fertilizer, and applied together during soil preparation, which can not only make the soil fully absorb fertilizer, but also ensure sufficient nutrition and growth of spinach.

6. Nitrogen fertilizer

Nitrogen fertilizer is the key to ensure the rapid growth of spinach, and it is also an important factor leading to the failure of spinach planting. When the true leaves of spinach grow to about 6 pieces, its cold resistance is also the strongest at this stage. Therefore, if spinach is sown at a reasonable sowing date and sufficient base fertilizer is applied, the application of nitrogen fertilizer should be reduced before winter. Because excessive nitrogen fertilizer will promote the growth rate of spinach, leading to missing the stage of the strongest cold resistance of spinach and affecting the survival rate of overwintering. If the base fertilizer is insufficient and the sowing date is wrong, nitrogen fertilizer can be applied appropriately according to the actual situation to improve the growth rate of spinach and ensure the success of overwintering.