The autumn tomato in greenhouses is cultivated in summer sowing and harvesting. The early growth period is characterized by high temperature and rain, virus diseases and other diseases are severe. The temperature in the late growth stage gradually decreases, and cold insulation is needed to prevent freezing damage. 1. Variety selection should be selected strong disease resistance, early maturing, high yield, resistant storage varieties. The current production of commonly used species are: Tropic, Florid, Jiafen No. 1, Jiahong, strong Feng, Shenfen No. 1, L401, Zheng Fan No. 2, Ting Hong No. 2, etc., should be combined Specific characteristics of local features. 2. Seeding period and nursery methods. Autumn crops in greenhouses are sown prematurely. The seedling stage is experiencing a high-temperature rainy season. The incidence of viral diseases is high, sowing is too late, and the growth period is insufficient. The fruit at the top third ear cannot become hot. The suitable sowing date should be about 110 days before the local temperature reaches minus 5°C. Beijing is suitable around July 10th, Liaoning Jilin is suitable for the middle-late June, and Henan, Shandong and other places are suitable for mid-late July. If only two panicles per plant, the appropriate sowing date can be delayed 4-5 days later. Greenhouse tomato cultivation can be broadcast live, but it can also be planted and transplanted. Live cultivation, root system is not damaged, plant growth is robust, yield is high, but the previous cultivator loose soil and spray pest control pests are more laborious. Greenhouses can be transplanted with autumn seedlings and transplanted with small seedlings (transplanted with seedlings) or transplanted with seedlings. Transplanting small seedlings generally in the two leaves, the seedlings will be planted into the greenhouse, seedling age of 15 to 18 days, when the secondary lateral roots of plants just out, the root is not large, less rooting when planting, easy to slow seedlings. Seedlings should be planted and watered in a timely manner, otherwise the soil is easy to compact and the “card neck†falls. Transplanting large seedlings is a commonly used form of production. When the seedlings are raised, 2 to 3 leaves of the seedlings are to be transplanted (sub-seedlings) once. The seedlings grow to 5 to 6 leaves. When the calendar seedling age is about 25 days, they are planted or removed from the nutritional bags. The advantage of this method is that it is convenient for centralized management at the seedling stage, and it is advantageous to plant rotations at the late stage. It is a serious disease in late planting. The actual production of greenhouse autumn seedlings using live seedlings or transplanting seedlings is often more beneficial than transplanting large seedlings for high and stable yields. Tomato seedlings can be shaded and shaded in summer to reduce disease and cultivate strong seedlings. 3. Site preparation before colonization, clean garden, soil preparation and fertilization. General Mushi rot about 5,000 kg of farmyard fertilizer. Autumn tomatoes can be planted or ridged. Planting density is usually larger than early spring cultivation. Cultivation of limited-growth varieties or per plant only preserved ear fruit, planted around 5000 per acre. Cultivate an unlimited variety of growing species, and leave 3 spikes per plant for cultivation, planting around 4000 strains per acre. The best choice for colonization is cloudy or evening planting, and watering in time to ease the seedlings. 4. After planting, management should be strengthened after ventilation and cooling. Timely tillage loose soil. If the plants are long, they should be sprayed in time. During the flowering period, the fruit hormones such as spraying or picking off the priming hormones are promptly pruned, hiccuped, and bound with vines. Generally, single stem pruning is used, and the fruit is picked up after 2 to 3 spikes. After mid-September, outside temperatures began to fall, and attention should be paid to night-time insulation. After the first fruit was established, water and fertilizer management was strengthened. 5. Diseases and Insect Pests Prevention Autumn sheds in greenhouses are heavier in pre-stage virus, and diseases such as late leaf mold, early blight, and late blight are heavier. It is necessary to strengthen prevention and control. Insect pests should be controlled against aphids, whitefly and cotton bollworm. 6. After harvesting and harvesting, the autumn tomato fruits in the greenhouse must be harvested and listed one after another. When the temperature in the shed drops to 2°C, it must be harvested and stored. Generally used simple storage method, stored in a sterilized room or greenhouse. The storage temperature should be kept at 10-12°C, relative humidity 70-80%, once weekly, and red ripe fruit should be listed one after another. Autumn tomatoes are generally not artificially ripened by ethephon in order to extend the storage time and extend the supply period.
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