Watercress, also known as watercress, is eaten with fresh stems and leaves. The season of harvesting is a season when the winter and spring green leafy vegetables supply less, and the market is selling well. In the middle and lower reaches of the Yangtze River, it is generally cultivated in the supply market for cultivation from October to March. It is a kind of economic benefit to grow tomatoes and other early-vegetable vegetables in front of the plant, achieve salt washing and salt pressing through paddy-upland rotation, and effectively manage continuous cropping barriers in greenhouses. Efficient and efficient eco-efficient facilities cultivation mode. The wintering tomatoes are planted in mid-November, and planted in late January to mid-February the following year. They are listed from late April to the end of June. The yield per mu is about 3,000 kg. The summer greenhouses can be planted with heat-resistant vegetables, which will be available in 25-30 days. It can be planted in 3 pods, with a yield of 2250 kg per mu. Watercress seeds in early September and harvested in mid-October. After 30 to 50 days, 3 to 5 pods can be harvested. In March, bream can be used to produce 2250 kilos per mu. The price is about 6 yuan per kilogram. For the early spring cultivation of tomato, Jinshe No. 1 and Cooperative 906 varieties with low temperature and low light should be used. The amount of seeds per acre of 20-30 grams, 10 to 15 grams per square meter seedbed sowing. Disinfect bed soil before sowing and prevent damping-off. In the greenhouse, seedlings, seedbeds covered with plastic film and small arch sheds, 70% of the seedlings were removed when the bed cover was removed. The Daejeon base fertilizer should be applied and transplanted in large and small rows, with a large row spacing of 1 meter, a small row spacing of 0.5 meters, and 3000-4,000 plants per acre. In winter, it covers a four-layer membrane (mulch film, small arch shed, middle shed, greenhouse) or three membranes (mulch film, small arch shed, and greenhouse) to ensure that the greenhouse temperature is not lower than 10°C at night and not lower than 20°C during the day. Heat-resistant vegetables use Xiadi, Huawang, Shulv and other varieties, sowing, seed use per acre amount of 1 to 1.5 kg. Before the planting, phoxim was used to sterilize the soil and the insect net was covered in the greenhouse after sowing. At noon during the high temperature period, shade nets were used to cover the roof to cool down. Watercress was 3,000 kg per hectare of base-fertilizer organic fertilizer, and soil preparation was done. The surface width was 1.2 meters, and the width of the groove was 30 cm and the depth was 20 cm. The water was kept in a depth of about half of the ditch so that the surface was fully moist but the water-free layer was sufficient. When the temperature falls below 25°C, sow the seed. Mix the seed with 1 to 2 times dry fine soil and sow. After 100 grams of seeds, about 2,000 square meters can be planted. When the seedling height is 5 to 8 centimeters, the water is poured onto the surface and there is a thin layer of water. With the growth of the seedlings, the water layer is gradually deepened to 3 to 4 centimeters, which should not exceed 5 centimeters. When the temperature falls below 15°C in winter, the surface of the surface is kept in water and covered with two layers of membrane insulation (below 0°C, watercress will die). Small seedlings prone to weeds in the field, should be promptly removed, after the lush foliage of plants no longer weeding. About 15 cm height can be harvested, harvested 3 to 4 days after irrigation, combined with application of fertilizer. Ligating Clips,Clip Ligation,Titanium Ligation Clips,Ligating Clip Applier Qingdao DMD Medical Technology Co., LTD , https://www.conston-tech.com