The spinach is widely cultivated everywhere, and it is the main green leaf of the summer and autumn. The water spinach prefers high temperature and humidity, strong heat resistance, and is not resistant to frost. In case of frost, the stems and leaves are dead, and the growth temperature is 25-30 °C. The growth below 10 °C is stagnant. Therefore, the plastic greenhouse should be used for anti-season cultivation in winter.
Cultivation techniques
1, variety selection
Suitable varieties for planting include big chicken yellow, big bone green, flag leaf, silk cocoon, and big chicken green.
2, cultivation season
Greenhouse cultivation can basically be produced on an annual basis and on an annual basis. In order to obtain high economic benefits, it should be planted in October-December and listed in December-March.
3. Soil preparation and fertilization
The growth of the water spinach is fast, the branching ability is strong, and the fertilizer and water are needed. When planting, the base fertilizer should be applied. Generally, the organic fertilizer is 1500-2000 kg per mu, and the grass ash is 100 kg. It is fully mixed with the soil and is 20 cm high and wide. 130 ~ 150 cm 畦 (groove).
4, soaking seeds and germination
The seed coat of the spinach seed is thick and hard. If it is directly planted, it will germination slowly due to low temperature. If it is caused by long-term low temperature and rainy weather, it will cause seed rot. Therefore, it should be germinated after germination. It can be soaked in warm water of about 30 °C for 18-20. Hours, then wrapped in gauze and placed at 30 ° C to germination, when 50 ~ 60% of the seeds are white, can be sown.
5, sowing
The water spinach can be spread or stripped, and the amount of seeds per acre is 15-20 kg. After spreading, the soil is covered with fine soil to cover about 1 cm thick. The strip can be used to dig a shallow groove 2 to 3 cm deep every 15 cm on the rake surface. Spread the seeds evenly in the shallow ditch, cover with fine soil, then cover the kneading surface with a sunshade net, pour water, and open the shading net after emergence.
6, harvesting
Generally, 35 to 45 days after sowing, when the water spine plant grows to a height of 35 cm, it should be harvested in time.
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