Hospital Pedal Dustbin,Mayo Table,Mayo Stand Better Medical Technology Co., Ltd. , http://www.fshospitalbed.com
Lettuce efficient production of new technologies
Lettuce, or leaf lettuce, has become popular among consumers in recent years. Since 2000, the vegetable farmers in Neijiang have cultivated and cultivated by open field cultivation. Six kinds of crops have been harvested six years in a year, basically fulfilling the year-round supply. The total output of six lettuces can reach about 3,500 kilograms per mu and the economic benefits are relatively high. The specific cultivation techniques are as follows: Rinse mouth arrangement No.1: Winter greenhouse production. Early-rising cold-leaved lettuce varieties, such as green wrinkled lettuce and imported American fast-food lettuce. Sowing seedlings are planted in late November and early December, and planted in plastic solar greenhouses in the middle of January. It is harvested from late February to early March and produces about 600 kilograms per mu. No.2: Early spring greenhouse leaves lettuce lettuce and fruits. In early January, seedlings are planted in plastic solar greenhouses in mid-late and late February, and tomatoes are planted in early April. In mid-April and late-April, lettuce was harvested, yielding about 300 kilograms per mu. No. 3: Early spring sheds lettuce and fruits. In mid-February, seedlings were planted in the greenhouse in late March, leaving fruit and vegetable colonization ridges. In early April, tomatoes were planted on ridges. The lettuce is harvested in mid-May and late. The yield per mu is about 250 kg. No. 4: In the early spring, a small shed is planted with lettuce. In late February, the nursery was planted in mid-April and was planted in a small open shed. The film was removed in mid-May. Harvested in mid-June, yielding about 1,100 kilograms per mu. No. 5: Planted cabbage lettuce in summer. The nursery will be planted in mid-June, and will be planted in open ground in mid-July and harvested in mid- and late-September. It will produce about 900 kilograms per mu. Article 6: Planting loose-leaved lettuce after the fall of the greenhouse. Seedlings are planted in early and late August, and greenhouse vegetables are planted after mid-September. Harvested in early November, the mu produce about 400 kilograms. The choice of soil should be fertile, with rich organic matter, strong water retention and fertility, good air permeability, and a slightly acidic soil with convenient drainage and irrigation. Seeding seedlings per acre lettuce need seedbed 20-30 square meters, with 25-30 grams of seed. Each 100 m2 of cultivated land is planted with 200-250 kilograms of farmyard manure, 3 kilograms of superphosphate, and evenly mixed after plowing. Planting in winter and early spring, the nursery period coincides with the cold season. Before planting, the seedbeds should be irrigated with water and dried seeds should be broadcast live. The bed surface is covered with a film and a small arch shed. After the emergence, the film is removed. During the day, the small arch shed is opened for ventilation and ventilation. Seedlings grow to 2 true leaves at intervals of 4-5 cm. 4-5 true leaves, 40-45 days of age can be planted. After summer and autumn, the planting period is delayed and the nursery period is in the hot season. Soaking the seedlings first, soaking in well water for about 6 hours, wrapping with wet gauze after harvesting, placing the seeds at 15-18 degrees Celsius, and germinating 80% of the seeds Timely sowing. After sowing, a shade shed or grass curtain is used to cool the water in the morning and evening. After the emergence, shading equipment is removed. 2-3 true leaf period seedlings, 4-5 true leaf stage planting. Fertilization planting planting place per acre Shi farmyard fertilizer 4000-5000 kg, superphosphate 20-25 kg. Loose lettuce leaves are 10 cm long and 15 cm long, and small trees are listed. The lettuce plants are spaced 20 centimeters and 30 centimeters apart. Soil mulch should be taken when planting, and root water should be poured in time. The depth of planting is not suitable for burying the heart and leaves. Field management of lettuce requires more fertilizer and should be applied more frequently and fertilized. After 5-6 days after planting, a small amount of available nitrogen fertilizer was recovered. After 15-20 days, 15-20 kg of compound fertilizer was traced per acre. After 25-30 days, 10-15 kg of compound fertilizer was traced. However, human fecal urine could not be used as top dressing in the middle and later stages. After the planting, the amount of water needed is large. It should be based on the weather after the seedlings are slowly growing and the soil moisture. Watering should be conducted at a proper time. Watering should be performed once every 5-7 days. Watering in the middle and later periods should not be excessive. In addition, in the cold season, we must strengthen the insulation measures. In the hot season, use shade nets or non-woven fabrics to cover the cooling. Pest control Aphids are mostly harmful in autumn, winter and spring, and can be sprayed with 40% dimethoate emulsion 600-800 times, or 50% avoiding fog 2000-3000 times. Sclerotinia mostly occurs in 2-3 months. It can be controlled by 70% thiophanate-methyl WP 500-700 times or 50% acetaminophen 1000-1500 times. Soft rot occurs easily in high temperature and rainy season. It can be controlled by using 47% Garricin 1000 times liquid, or 77% killable WP 500 times, and stop using drugs 15 days before harvesting.