The latest key points of spinach water and fertilizer management

Spinach, also known as Persian food, parrot, etc., is a kind of annual herb of Chenopodiaceae. Spinach is a very common vegetable in China. Spinach has high nutritional value, which is not only edible, but also medicinal. So now spinach cultivation is also very common, when planting spinach, watering and fertilization is very important. Today, the editor brings you the key points of water and fertilizer management of spinach. Let's take a look at it.

1. Watering points

Spinach has a well-developed root system and generally likes to grow in soils rich in humus and with a PH value of about 6.5. However, the waterlogging tolerance of spinach is relatively poor, and the soil moisture should be kept at about 20%, which can easily lead to the death of spinach rotting roots. In the early growth stage of spinach, the amount of water required is small, but in order to ensure that the seedlings are strong and strong, sufficient water should be poured before sowing. There is no need to water after sowing to before emergence. During the period when spinach seeds germinate to grow 3 leaves, it is necessary to control the amount of watering to avoid causing diseases such as blight.

After entering the middle and later stage of spinach growth, the water demand of spinach will increase, and it will be watered about 4 times during this period to keep the soil in a moist state. Then when growing overwintering spinach, pour in plenty of antifreeze water. When entering the high temperature season in summer, watering should avoid noon and should be carried out in the morning and evening, so as to cool down to promote the growth of seedlings. And after each fertilization, it should be watered once. Finally, in order to ensure the quality of spinach before harvest, watering should be stopped to avoid diseases caused by excessive humidity.

2. Application of base fertilizer

The sowing time of spring spinach is relatively early, so soil preparation and fertilization can be carried out last year. The basic fertilizer is mainly rotten farm manure, which is applied to about 4500kg per mu, then turn the soil about 22 cm deep, and then rake the soil flat to make the bed. Then sow seeds when the soil is thawed about 8 centimeters in early spring. The amount of fertilizer used in autumn cabbage is similar to that of spring spinach, mainly in high or flat beds. The overwintering spinach should choose the soil with sufficient fertility, deep soil layer and good fertilizer and water retention. Compared with other seasons, it is necessary to appropriately increase the amount of base fertilizer, turn the soil deeply so that the soil and fertilizer are fully mixed, and promote the emergence of seedlings.

3. Topdressing method

In the early stage of the growth of spring spinach, there is no need for topdressing, but in the middle and later stage, the demand for fertilizer and water for spinach increases, and the amount of fertilizer such as ammonium sulfate can be properly applied, and the dosage is controlled at about 40 jin. The growth period of spring spinach is not long, ensuring sufficient nitrogen fertilizer can effectively enhance the leaf growth ability and delay the bolting period of spinach. When autumn spinach grows to 5 true leaves, it is necessary to apply available nitrogen fertilizer for about 3 times, such as ammonium sulfate, urea and so on. The growth period of overwintering spinach is relatively long, so it should be topdressing about three times before winter, overwintering and early spring, and the fertilizer is also mainly sulfuric acid, farm manure and other fertilizers.

The above is a brief introduction to the main points of spinach water and fertilizer management. That's all for today's introduction. This article is for reference only. I hope it can help you all.