1. Preparation before broadcast
The overwintering spinach planting should be concentrated on the plots, flat terrain, good drainage and irrigation, not subject to "three wastes" pollution of the plot, in addition to loose fertile, water and fertilizer fertilizer slightly acidic soil is a good field, the soil should be deep deep-rooted in time, sufficient base fertilizer ( For each 667 square meters, 4,000 kg of organic fertilizer and 40 kg of superphosphate are used to make the sorghum. Before ploughing the rear rake, 2 kg of Baofeng is mixed with fine soil every 667 square meters, and then deep ploughed with a rotary cultivator to prevent underground pests such as mantle, ground tiger, earthworm, bushy dwarf, and bacterial wilt. Phosphate fertilizer, all or 2/3 potash fertilizer base fertilizer, nitrogen fertilizer 1/3 as base fertilizer. Every 667 square meters of organic fertilizer 3000 ~ 5000 kg, should be based on the length of fertility and soil fertility conditions to adjust the amount of fertilizer. The basal fertilizer is mainly caster and it is 25-30 cm deep.
Remember that urban waste, etc. cannot be used as organic fertilizers, and organic fertilizers should be farmyard fertilizers, which should be harmlessly treated.
2. Sowing seedlings
(1) Seed soaking
Overwintering spinach is suitable for sowing in mid-October to early November, harvesting in batches before and after the Spring Festival. It is recommended to use medium- and late-maturing varieties with strong winter, late bolting, and strong cold resistance, such as Danish Fast Green 2, Shouguang Syngenta, and Hong Kong Omnipotent. In order to increase the seed germination rate, the seeds were soaked with cold water for 12 hours before sowing. Remove mucus, remove and drain, then broadcast, or germinate at 15-20°C. Seeds can be sowed after 3 to 4 days of exposure to the radicle.
(2) timely sowing
The average monthly temperature in autumn fell to 17 to 19°C for proper planting time. In the winter, it is not too cold, and in areas where the rate of death is low in winter, sowing is frequently used. In winter, when the winter is cold and the rate of death is high, many drills are used to facilitate soiling. Drilling distance 10 to 15 cm, depth of 5 to 6 cm. Generally sowing 4 to 5 kg per 667 square meters of winter cultivation. Multiple harvesting and overwintering cultivation in severely cold winters require an appropriate increase in seeding volume, which can be increased to 10 to 15 kg. After planting water, plant the surface water and sow the soil. Use the gingiva to lightly soak the topsoil, so that the seeds will be sown in the soil, and then cover the grass and wood ash. Keeping the soil moist, 6 to 7 days can be seedlings, winter sowing temperature is low, then cover the plastic film or shading net insulation to promote seedling emergence after removal.
3. Field management
(1) Management before wintering
After the wintering spinach emerged, under the premise of not affecting the normal growth, proper control of watering causes the root system to develop in depth. After 2 to 3 true leaves, the growth rate is accelerated. Every 5 to 7 kg of nitrogen fertilizer (per 667 m2) is applied with 667 m2 of water, followed by shallow cultivating and weeding.
(2) Management during wintering
Wind barriers should be built before the soil is frozen. Generally, the soil should be poured into frozen water at night when the soil is frozen, and the clay field should be cultivated in time. In the cold regions, one layer of dry soil or soil can be covered in the morning after the water is thawed to prevent cracking and soiling and timely spraying. Stems and stems make the stems and stems of the plants robust, and the leaves are hypertrophied, improve the disease resistance of spinach, reduce the amount of pesticides and fertilizers, reduce the residual toxicity, and improve the natural taste of spinach.
(3) Return to Youth Management
When the plough layer has been thawed, the topsoil has dried, and the spinach heart leaves have begun to grow, choose sunny days to start pouring back to Qingshui. After returning to Qingshui, there should be a stable sunny day. Returning to Qingshui should not be large (except for saline-alkali land). The overwintering spinach should ensure adequate water and fertilizer supply from returning green to harvesting, combined with watering, and top dressing according to the harvest conditions. The topdressing amount is 4 to 5 kg of pure nitrogen per 667 square meters. If there is too much snow in the vegetable fields in the early spring, the snow should be removed as soon as possible.
Organic Garlic Granules,Organic Granulated Garlic,Garlic Powder To Minced Garlic,Bulk Granulated Garlic Powder
shandong changrong international trade co.,ltd. , https://www.cragriculture.com