How to fertilize spinach? How to fertilize spinach
Spinach, also known as Persian, is an annual vegetable. Spinach is rich in carotene and various vitamins, and its nutrition is very beneficial to the growth of the human body. Its origin is Iran, but the planting area in China is very wide. During the growth and development of spinach, it is more fertile and has a greater demand for nutrition. So everyone needs to do a good job of fertilizing in the planting process, so how to fertilize the spinach? Let's take a look!
1, the base fertilizer
Spinach takes a long time from sowing to maturity, so we must apply enough base fertilizer when planting winter spinach. Because the winter temperature is low, the soil fertility is reduced, and the lack of soil fertility will lead to the phenomenon of de-fertilization of spinach, which will have a certain impact on the germination and emergence of spinach. The base fertilizer must be applied enough, but not excessive, otherwise it will prone to prolonged phenomenon. The base fertilizer can be mixed with the fully decomposed farmyard manure and the quantitative phosphorus and potassium fertilizer. When the soil is used for the preparation of the earthworm, the soil can fully absorb the fertilizer and ensure that the spinach has sufficient nutrition to ensure the growth.
2, nitrogen fertilizer
Nitrogen fertilizer is the key to ensure the rapid growth of spinach, but it is also an important factor leading to the failure of spinach planting. When the true leaves of spinach grow to about 6 pieces, their cold resistance is also the strongest at this stage. Therefore, if spinach is sown in a reasonable sowing time and the base fertilizer is applied, then we should reduce the application of nitrogen fertilizer before winter. Because the excessive nitrogen fertilizer will promote the growth rate of spinach, leading to the stage of missing the strongest cold resistance of spinach, affecting the survival rate of wintering. If the base fertilizer is insufficient and the sowing time is not correct, the nitrogen fertilizer can be appropriately applied according to the actual situation to increase the long speed of the spinach and ensure the success of wintering.
3, return to green fertilizer
After successful wintering, it will reach the greening period of spinach. The requirements for fertilizer and water will gradually increase during the regreening period, and it should be topdressed according to the growth of spinach. When topdressing can be done with watering, but pay attention to the time of top dressing, too late will affect the growth of spinach. Premature topdressing will lower the surface temperature, inhibit the growth of spinach, and affect the spinach seedlings. The spinach in the greening stage must be applied with at least two fertilizers. The first time before and after the vernal equinox, the second time can be before and after the Ching Ming Festival, because these two stages are the key period for the ambient temperature to gradually rise, which is beneficial to the soil to absorb fertilizer and nutrition. .
4, topdressing points
The best time for spinach topdressing should be before the flowering period, before the flowering period does not reach the top dressing, then the flowering period of spinach can be appropriately delayed, which is beneficial to increase the pollination and fertilization rate of spinach, increase the yield of spinach and enhance the quality. Spinach is sensitive to changes in nitrogen fertilizer. Nitrogen fertilizer is divided into ammonium nitrogen and nitrate nitrogen. The soil temperature after wintering has not recovered, so the digestion of ammonium nitrogen is not very obvious. Therefore, when we are applying nitrogen fertilizer, we should reduce or even stop the use of ammonium nitrogen, and then pursue nitrate nitrogen.
The above is a brief introduction to the fertilization method of spinach. Do not think that fertilization is the most basic work in planting and ignore its importance. It is because the most basic is the most important, reasonable fertilization can not only promote the growth of spinach, increase yield, but also avoid soil damage caused by unreasonable fertilization methods. (黔农网)
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