Autumn cabbage generally has a higher yield than spring cabbage and is stable and resistant to storage. Appropriate development of the autumn cabbage has an important role in regulating the supply of off-season vegetables and increasing market vegetable varieties. Autumn cabbage is sown in summer and harvested in late autumn and early winter. The cold autumn climate is suitable for the growth of cabbage, so the yield is high and the quality is excellent. Its cultivation techniques are as follows:

First, choose a good species

Autumn cabbage and spring cabbage contrary, its early growth period is the season of high temperature, so should use heat, cold and product resistance to storage of early, middle and late maturing varieties, can be sown. Such as Zhong Gan l6, Zhong Gan 17, Xia Guang, Shinong 200 and other varieties.

Second, apply base fertilizer

Generally, per acre, apply roasted ripe manure or compost from 4000 to 5000 kilograms, mix 50 to 70 kilograms of phosphate fertilizer with it, and apply it after maturity. Apply 60% when the ground is used for hoeing and 40% when planting seedlings. In the absence of organic fertilizer, 40 kg of calcium superphosphate and 15 kg of potassium chloride were used as base fertilizer per acre, and 30 kg of compound fertilizer was ploughed into the soil as a base fertilizer before planting.

Third, the appropriate sowing

Autumn B. oleracea varieties have a longer growth period, while the autumn growth period is limited. Therefore, the seeding period of the autumn cabbage should be determined according to the growth period of the variety. Hebei and Shandong are suitable for planting from June to July. Use sorghum shade breeding to facilitate sun protection, rain, and cooling.

Fourth, timely planting

Autumn cabbage is planted at a time when the temperature is high, the soil moisture is small, and the evaporation is large, should be selected on cloudy days or sunny evenings. The day before planting, the seedbeds were irrigated and the seedlings were dug without excessive rooting. Proper shallow planting when planting is conducive to hair rooting. Planting water to be poured enough, slow seedling water to be poured early, and make up the seedlings to preserve the seedlings. Usually about 30 days, 7 to 8 leaves when planting. The spacing is 50-60 cm and the spacing is 45-50 cm.

V. Scientific fertilizer

Autumn cabbage dressing is generally divided into 5 times. During the time of colonization, the human feces and urine are applied once; when the rosette leaves are formed, the second fertilizer is applied topically to increase the concentration, and the dosage is increased. The human feces and urea fertilizer may be used; Sub-fertilizer, can be buried in the trenches between the rows, the organic fertilizer and nitrogen, phosphorus fertilizer mixed, applied to the sealed soil after irrigation, and then spread on the ground to plant ash. In the early and middle stage of each ball, three yuan compound fertilizers were topped each time, about 35 kilograms each time, and fertilizer was stopped at the end of the ball.

Sixth, watering drainage

Early attention to loose soil ventilation, drought, grass and drainage prevention. In the middle and late stages, the fertilizer and water will be attacked in a timely manner. When the drought occurs, it will be watered in a timely manner to keep the soil dry and wet. After entering the lotus period, the soil will be kept moist. It is best to water the well with water, and do not pour the river water. Do a good job of drainage work in time after heavy rain. Received the first half of the month to control the water and fertilizer to facilitate storage.

Seven, disease prevention and pest control

After planting, pay attention to pest control, black rot can be sterilized by 50% into 800 times liquid or 72% of streptomycin in agriculture, 3500 times or 77% can kill 500 times spray. Virus disease can be sprayed with 20% virus A wettable powder 500 times or sprayed with 1.5% plant disease spirit 1000 times liquid. The main pests of cabbage include Pieris rapae, Plutella xylostella and Spodoptera litura, which can be sprayed with 5% inhibitory oil in a 1500-fold solution of preserved milk.

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