The sowing point of autumn cabbage

Land selection: 1. Soil quality: It is appropriate to choose fertile sandy loam, loamy soil, light-soil loam soil, etc.; while sand and sandy loam soils have poor fertility and water retention, which are not conducive to the development of leafballs, and heavy clays are susceptible to soft rot. Kind of Chinese cabbage. 2. Mouthwash: Chinese cabbage should be cultivated for 3-4 years. Crops from melons, solanes, onions and garlic, legumes, and wheat can be used as a mouthwash, not with cruciferous vegetables (eg cabbage, indigo, etc.). Radish, etc.) Lian or neighboring. Seed treatment: The seed treatment method can be selected as appropriate. 1, drug seed dressing. With 25% metalaxyl WP, dosage is 0.3% of seed weight, against downy mildew and black rot; with 50% thiram wettable powder, dosage is 0.4% of seed weight, anti-black spot . 2, warm soup soaking. Soak the seeds in warm water at 50°C for 20 minutes, remove them by cooling them in cold water, and then air dry the seeds to prevent anthrax and black rot. Soil preparation and fertilization: After harvesting, the sick plants will be transported to deep fields and turned deep 16-20 centimeters for about 15 days. After applying 4000-5000kg of high-quality organic fertilizer, 25-30kg of superphosphate, and 40-50kg of plant ash per acre, the soil is ploughed into the ground to prevent spawning of adults. After the ground is levelled, it shall be ridged, and the width shall be 1 meter, or 1.5 meters, or 2 meters, and the length shall be 6-8 meters; or ridging, ridge height 8-10 centimeters, ridge width 25 centimeters, ridge length 10 meters or so; Or to make a small high-pit ridge membrane, ridge width of 1.2 meters, 10 centimeters in the middle of the bow-shaped surface (can prevent soft rot), with a good earth pressure around the film. And weed out the weeds in the field (prevent breeding insects). Seeding method: 1, the first watering method. Before sowing, firstly irrigate the water (note the rainfall forecast), wait until the surface is slightly dry, then loosen and loosen the flat. Use a rake to open a 1 cm deep ditch with a row of rakes. Spread the seeds into the ditch by hand, and then apply 3-5 kg ​​to the ditch. Ammonium nitrate (per acre) was used as a seed fertilizer and cover soil; on the second day, the seedling ditch was lightly stepped on one time; on the third day, the seedlings were not excavated or emerged unevenly, and shallow water was poured one time. 2, three water Qimiao law. First, use a hook to open a 1 cm deep ditch with a hook, and then sprinkle the seed into the ditch by hand. After applying the fertilizer, cover the soil. In the 3 days before the seedlings are excavated, pour water 1 times a day. 3, plastic film cultivation method. Use a hole punch to punch holes in the mulch film near the sulcus and sow seeds while drilling. Each seed hole should sow 5-7 seeds, cover 0.5 cm thick soil, and press the mulch film around the hole with wet soil. , The day ditch poured water once.

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