Three-maturity and high-yielding cultivation techniques for vegetables

Spring cabbage is selected from precocious, high-yield, disease-resistant, and resistant to early bolting varieties, such as spring generals, spring strong spring crowns and so on. Normally, nursery seedlings are planted in the protected areas from late February to mid-March. Seeds are sown in nutrient bowls, organic fertilizer is applied before planting, and about 3,500 plants are planted per acre. During Daejeon, attention was paid to pests and diseases such as soft rot, downy mildew, cabbage caterpillar, and roundworm. Soft rot mainly damages leaves, tender and juicy tissues, and stems and roots. Spring cabbage is susceptible to the disease during the ball stage. With rising temperatures (25 to 30°C), the incidence rate can reach 30% to 60% or even higher. In addition to the timely sowing of soft rot, the diseased plants were found to be removed in time and lime was disinfected. Spring Chinese cabbage should be thinned in late April. The average output value of mu can reach more than 3,000 yuan. Summer cabbage uses precocious, heat-resistant, high-temperature resistant, neat ball-combed varieties, such as the Xiaguang generation, sown from late May to early June, with a value of 4000 to 5000 plants per acre. To bring good soil groups is the key to survival. Only 60 to 70 days after planting and harvesting, the plants after planting should be top-hatched with water in the early morning and evening, and the first time the seedlings are planted and new roots should be applied. Usually, 20% to 30% of them are used. Human waste. The second time in the early stage of rosette leaf growth, 20% to 30% of human feces and urine are usually added with nitrogen fertilizer. The third time it took place in the growth stage of rosette leaves, and 2 additional fertilizers were applied in the early and mid-balloon stages. Fertilizer application and watering were stopped at the end of the ball stage. Summer cabbage can be listed in early September, the general output value of more than 2,500 yuan per mu. Autumn celery chooses varieties with high disease resistance and high yield, such as American celery, Jinnan Real celery, etc., which are generally sown in mid-September. Pre-soak seeds for 24 hours before sowing, and then germination for several days in shade, until 80% of seeds germinate before sowing. After the seeds are sown, they are covered with a shade net combined with straw. Keep the seedbed moist before emergence, and remove the sunshade immediately after emergence, and cover the shade net properly at noon in case of high temperature and drought. Seedlings are colonized when they are about 10 cm. 5 to 7 days before planting Mushi rot 4000 kg of organic fertilizer, combined with 60 kg of NPK fertilizer. Plant spacing 10 cm X 15 cm, 3 to 4 per cluster. After the autumn celery planting and survival, it is necessary to chase fertilizer for many times, and the average output value of mu can reach more than 3,000 yuan.

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