Xiaoshu takes good autumn crops to raise seedlings

In the autumn, the cucumbers in the open field are selected from the varieties of “Beijing Qiugua” which are heat-resistant, precocious and disease-resistant. They can be directly sown in early July and supply the autumn off-season market in the late August to early October. To apply organic fertilizer, make ridges and sorghum, can not lay mulch, planted at a density of 70-75 cm 30-33 cm.

Early-maturing cabbage planting began to plant heat-resistant cabbage in the middle and upper stages in July, and selected early-maturing and heat-resistant varieties such as “Xiaoza 56” and “Betty”, which were harvested before and after the National Day and Mid-Autumn Festival. It is necessary to apply enough base fertilizer, fine soil preparation, watering and cooling between rows after sowing, and prevent diseases such as viral diseases, mites and cabbage caterpillars from the seedling stage.

The autumn seedling nursery and nursery site should be selected in a greenhouse with a high dryness, capable irrigation, good ventilation, or a special nursery shed. The air outlet and the doorway are sealed with insect nets. The noon roof is covered with a shade net to cool down, and the external shading and micro-spray cooling facilities are installed conditionally. In order to prevent rain, the drainage ditch should be dredged around and made into sorghum to prevent pests and diseases.
â– In the open field, the cauliflower, cabbage, indigo, lettuce and other crops are planted in the open area. The most suitable sowing and seedling period in Daxing, Tongzhou, Shunyi and other plain areas is from late June to early July, and is planted at the end of July to early August; Yanqing High-altitude mountainous areas such as Miyun should be planted 7-10 days in advance. Choose early-maturing, heat-resistant varieties, such as: cabbage can choose "Zhonggan 15", "Qiugan 5" and other varieties.
■In the autumn greenhouse, peppers, sweet peppers, and colored sweet peppers are grown in the middle and late July. The greenhouses with poor heat preservation performance should be bred for 5-10 days. The colored sweet peppers should be properly bred and planted in July. Mid-term; general seedling age 45-50 days, planted in late August to early September, harvested from the beginning of November to the Spring Festival. In greenhouses with good ventilation and low temperature, 50-hole plastic plugs are used, and the special substrate for seedlings or grass charcoal, vermiculite and perlite are used as the matrix. Soak the seeds in the warm soup and soak the seeds and germination, and germination for 6-7 days in the environment of 25 ° C - 30 ° C until the seeds are germinated.
â–  Autumn and winter greenhouse tomato seedlings are generally seeded in mid-July, fixed in mid-August, harvested in mid-November to mid-January; greenhouses with poor thermal insulation should be properly raised early. In recent years, tomato yellow leaf curl virus disease has become serious, and once the infection occurs, it often causes a substantial reduction in production, or even no harvest. The best way is to start the prevention work from the seedling stage, use the "Golden shed 11" and other disease-resistant varieties, use the "full protection" measures such as sunshade net, shed film rainproof, insect net and insect control to cultivate strong seedlings and prevent smoke. Whitefly transmission.
â–  Autumn greenhouse tomato, cucumber seedlings, autumn greenhouse tomatoes, anti-yellow leaf curl virus, heat-resistant "Golden Shed 11", "Xianke No. 8", etc., seedlings in early July, planting in late July; cucumbers use early maturity, anti-resistant Diseases and good quality "Zhongnong 16" and other varieties, seedlings in mid-July, planted in early August, using 72-hole plastic plug seedlings, grass carbon and vermiculite, perlite as matrix; cucumber can also be taken in July Direct seeding in the second half.
■ Autumn 茬 shed celery seedlings Autumn shed celery seedlings in July and mid-July, planted in mid-September. The seeds must be sown after low temperature germination, and after soaking for 24 hours, the seeds are hand rubbed to remove the germinated substances on the seed coat, and then germinated for 6-7 days at 17 ° C - 20 ° C. It can be placed in a place 50 cm away from the water surface of the well. When the seeds are just beginning to sprout, sow and cover the nursery shed for rain and rain.

Carrots began to be planted in the middle of July. The carrots were planted in the open field. The varieties should be of high quality and high quality such as the root shape, the skin, the flesh and the fruit core. Apply 4,000 kilograms of decomposed and finely divided high-quality organic fertilizer or 3,000 kilograms of commercial organic fertilizer per acre. After intensive tillage, it is made into sorghum sowing, sowing seeds evenly, about 300 grams per mu.

The management of Yuexia facility and open field vegetables should be done in accordance with the environmental conditions in the facility, and the air outlet should be opened in time. At 11:15 pm on sunny days, the roof covered with sunshade and shading, and the high temperature period was cooled by micro-spraying or inter-row watering. It is also necessary to do topdressing and watering work according to the weather, soil and plant growth; timely pruning and smashing, removing the old leaves, so that the field is ventilated and light, and the disease is reduced. Do a good job in the prevention and control of diseases such as downy mildew, yellow wilt, late blight and cotton bollworm, tobacco budworm, aphid, etc., and strictly abide by the safety interval after application.

The harvesting and pulling of facilities and open vegetables is the late harvesting period of various crops such as tomato, eggplant, cucumber, pepper, peas and kidney beans grown in spring sheds and open fields; leeks, coriander, auricula, spinach, etc. In the early stage of harvesting heat-resistant leafy vegetables, it is necessary to choose sunny days and early harvesting to prevent fruit falling and miss the best commodity period and reduce quality. For the crops that have been growing badly, the residual plants, fallen leaves and weeds are cleaned and transported to the designated place for ozone treatment or high temperature composting.

After the high-temperature disinfection of the spring sorghum in the solar greenhouse, the soil is highly sterilized by soil-borne diseases such as gray mold and sclerotia and the worms with serious worms, and 900 kg of crop straw such as mashed wheat straw is sprinkled per mu; -80 kg or quicklime powder 100 kg - 200 kg. Mix well with the ploughed soil and then pour sufficient water. Cover the agricultural film and cover it tightly. Close the air outlet of the shed and the doorway for about 30 days, so that the soil temperature of the plough layer reaches 50 °C or above, and use the high temperature in summer to kill the soil in the plough layer. Gray mold, sclerotia and other soil-borne diseases such as pathogens and nematodes.

Before the arrival of the drainage ditch and the greenhouse rain-rainy season, the field drainage ditch will be cleared early, and there will be no water and no land in the field after the rain. Inspect and repair the greenhouse wall and roof to ensure that no rain is leaked; check the storage of insulation materials such as grasshoppers and insulation to prevent losses due to water leakage.

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