Ppt courseware of Chinese cabbage cultivation technology teaching plan

Chinese cabbage, native to northern China, is a leafy vegetable of Brassica in Cruciferae, usually referred to as Chinese c

Ppt courseware of Chinese cabbage cultivation technology teaching plan

Chinese cabbage, native to northern China, is a leafy vegetable of Brassica in Cruciferae, usually referred to as Chinese cabbage. It also includes Chinese cabbage and Chinese cabbage, a cultivated variety of Chinese cabbage, namely Chinese cabbage or cabbage. Introduced to the south, it is cultivated all over the country. Chinese cabbage has wide adaptability and can be cultivated in all seasons, but it is cultivated most in autumn and winter. This paper mainly introduces the cultivation techniques of Chinese cabbage in autumn and winter.

I. Selection of Gardens and Varieties

Although Chinese cabbage has strong adaptability, in order to obtain high yield, high quality and high efficiency, it is necessary to choose a plot with loose soil, deep soil layer, good ventilation, medium fertility, no water accumulation, convenient drainage and irrigation, no three wastes pollution and convenient transportation. At the same time, we should choose varieties with high yield, good quality and good market sales according to different cultivation seasons. In summer and autumn, Gaokang 2, Xingdian -2 and 83? 1 and other varieties. In winter and spring, you can choose varieties such as Xiaoza 56 and Zaohuangbai.

Cultivation techniques of Chinese cabbage

Second, planting festivals.

Chinese cabbage can be sown and cultivated in Wenshan all year round, but 8? 10 is the best, 2? Spring Chinese cabbage is sown in March and cultivated with plastic film mulching. 4? Pay attention to the selection of heat-resistant and disease-resistant varieties when sowing in summer and autumn in July. 1 1 month? Sowing in June, 5438+the following year 10 should be carried out with heat preservation. At the same time, according to the market demand for varieties, choose marketable varieties.

Third, the whole geographical moisture.

After harvesting the previous crops, plow and bask in the sun in time, rake carefully, remove weeds and level the land. Whether sowing in winter or harvesting in spring or sowing in summer and autumn, the soil moisture should be high, 2 meters wide, 0.3 meters deep and 0.3 meters wide.

Fourth, sow seeds.

1, seed treatment. Soak the seeds with warm water at 55℃ 15 minutes before sowing, dry them, and seed them with carbendazim or 0.3%? 0.4% thiram, chlorothalonil or toxomyl for seed dressing. Or the seeds before sowing 1? Two days can prevent some diseases.

2. Soil disinfection and seedling prevention. 70% of dixon powder can be mixed with 20 times of dry fine soil and some pesticides (such as Lesburn, Diwan, etc.) in continuous cropping or frequent cropping areas. ) and dispersed in the sowing holes. At seedling stage, 75% chlorothalonil WP 500 times solution or 20% Kuaike WP 900? 1000 times liquid spray prevention.

3. Sowing method and density. After direct seeding and soil moisture management, ponds should be planted according to the characteristics of varieties and soil fertility. Determine the reasonable sowing density according to the variety characteristics. Like 83? 1 general plant spacing 40? 40 cm, sowing about 4000 ponds per mu, and the row spacing of small miscellaneous series plants is 35? 35 cm, sowing about 5000 ponds per mu, and sowing 5 grains per pond? 6 seeds, after sowing, cover the pond with fine manure to keep the soil moist.

4. Apply sufficient base fertilizer. Organic fertilizer is the main fertilizer, supplemented by chemical fertilizer, and high-quality decomposed farmyard manure is applied, 3000 kg, 40? 80kg of compound fertilizer is piled and retted, and then used as base fertilizer and put into the pond at one time.

Verb (abbreviation of verb) Tian Tuan management

1, timely interval seedling. Covered with plastic film, the film should be broken and exposed in time after emergence, and the film mouth should be sealed with fine soil. When the seedlings grow to 2? When there are 3 leaves, occasionally remove weak seedlings and diseased seedlings, and leave 2 leaves in each pool. Three, when there are four? When 5 true leaves were combined with the second thinning, the seedlings were fixed and 1 healthy seedlings were selected.

2, intertillage weeding. Interplanting and seedling determination should be combined with intertillage weeding and shallow intertillage, and the number of intertillage should be increased in rainy season to prevent soil hardening.

3. Irrigation and drainage. Drought in winter and spring is easy to cause water shortage, so it is necessary to water in time to keep the soil moist, especially during the ball-bearing period, and pay more attention to moderate watering. It's hot and rainy in summer and autumn. After the rain, we should pay attention to ditch cleaning, soil cultivation and drainage, and timely eliminate the accumulated water in the ditch to prevent the invasion of dead seedlings and germs. Due to the particularity of geographical location, there will also be drought in flower arrangement in summer and autumn in our state. Because of the large evaporation at high temperature, water should be done in time, and water should be done early and later to reduce the ground temperature and prevent the high temperature hazard.

4. Top dressing. Generally, we should pay attention to the key points of topdressing twice at the stage of heading and heading. This is the key to ensure high yield of Chinese cabbage. At this time, Chinese cabbage is in the rapid growth period, so it is necessary to increase the amount of topdressing, mainly nitrogen fertilizer, combined with phosphorus and potassium fertilizer, or apply dilute chemical fertilizer to people, livestock and poultry regularly. The specific topdressing measures are as follows: use 1000 kg decomposed manure water for the first time and use it after the seedlings are fixed. For the second time, 1000 kg of decomposed manure and 20 kg of urea were used in the clumping stage. The third time is the key topdressing stage, that is, the initial stage of granulation, with decomposed manure 1000 kg per mu and 20 kg of urea. Spraying 1:250 times potassium dihydrogen phosphate in the middle of heading can enhance plant resistance, produce vegetables with excellent appearance and internal quality, and improve commodity value.