The choice of flat terrain, convenient irrigation and drainage, soil plough depth, fertile, suitable soil structure, physical and chemical properties are good, suitable for sandy loam soil, the former crop is not Liliaceae vegetables. 2. sowing (1) Sowing date Select good varieties to sow before Ching Ming Festival until the beginning of summer. (2) sowing method Amaranth sowing method Dry seed sowing and wet seed sowing two methods, no matter which method should use new seeds, the best first germination test, the general germination rate should be more than 70% to use. Seeds of dry seeds are planted and shallow grooves of 1.5 to 2 cm in depth are formed at a spacing of 10-20 cm. Spread the seeds evenly in the ditch. After sowing, cover the soil with a ditch, gently step on it and then water it. Keep the soil moist before the seedlings emerge and prevent surface compaction. Mu using 6 to 7 kg. Wet seed sowing is sown with seeds soaked with germination. First of all, pouring sole water in the pot, the general water layer 7 ~ 9 cm, this amount of water can make the seedlings unearthed to 6 to 7 cm high without watering, after the water seepage, spread in the face 0.2 ~ 0.3 Centimeter thick subsoil, can be sowed after the subsoil, generally use sowing, with 8 to 10 kg is appropriate. After sowing, the sieving fine soil is 1 to 2 cm thick, and the mulch is covered with a plastic film to increase the soil moisture and protect the soil. 3. Seedling management Leek sprouts slowly, seedlings difficult top soil, after sowing the surface should be kept moist, generally wet seed sowing, there is a plastic film coverage, no watering before emergence, arched soil should promptly remove the film, depending on the soil moisture decide whether to water. Dry seed sowing, in addition to the first sowing after pouring a water, after every 4 to 5 days, pouring water once, the water over the surface can be a slip, do not be large. Two crops can be planted after the proper sowing. After the seedlings were unearthed, they mastered the principles of promoting seedling growth in the early stage and seedlings in the latter stage in management techniques. When the seedlings grow out of the first true leaves to 3 to 4 leaves, the roots of the plants are weak and mostly distributed on the surface of the soil. Therefore, it is imperative that there is no shortage of water, and the buckwheat noodles should be kept dry. Generally, the water is poured every 5 to 7 days. . When the seedling grows 5 leaves, when the seedling height is 15 to 18 cm, the root system is relatively well developed, and watering can be properly controlled to prevent rollover caused by leggy. From the seedling height of about 15 cm to the rainy season, it should be combined with water to top-dress 2 to 3 Times, acres of topdressing urea 10 to 15 kg, has an important role in the cultivation of strong seedlings. 4. Weeding technology For early sowing, especially wet seed sowing with 33% of the weeds with 150-200 kg of weeds, 30-50 kg of water evenly sprayed on the surface better, for the seedlings weeding without weeding Fields can use herbicides for stems and leaves, 20.8% of high-efficient straw to 40 ml or 5% of quizalazine 50 ml, and evenly spray 30 to 45 kg of water on 3 to 6 leaf seedlings. 3 to 6 leaves are good. Stem and leaf herbicides should be selected from 9 to 11 o'clock in the morning or 3 to 5 o'clock in the afternoon. Closed weeding should be selected after the application of water in the evening as well, in order to absorb at night, to achieve the purpose of control. 5. Field planting management The date of planting should be based on the size of the planting time and the seedling size. Plant height 18 to 20 cm, 7 to 9 leaves suitable for the cultivation of leeks. The spring equinox sown to Ching Ming was planted after the summer solstice. The main planting methods include dense planting, dense planting, planting of small ridges, and wide ridge planting. Take the leek seedlings out, cut the roots of the fibrous roots, leave 2-3 cm to promote the development of new roots, and then cut off the leaves to reduce the leaf surface evaporation and maintain the balance of root absorption and leaf surface evaporation. Plant spacing 10 cm 20 cm, 8-10 per hole seedlings; or 30 to 36 cm 20 cm, planting 20 to 30 per hole, planting depth to not bury the tiller section is appropriate. The cultivation of leeks is best avoided in the high temperature and high humidity season. Otherwise, the excessive soil moisture and insufficient oxygen content will affect the development of new roots and even cause rot. If the temperature is too high and the transpiration is excessive, it may cause excessive loss of water and dry leaves. Delaying seedlings and planting too late. When the growth time is short in the autumn, bulbs accumulate less nutrients and affect the yield in the second spring. 6. Water and fertilizer management After 3 days of planting, the water was poured twice, and the seedlings were sown 2 or 3 times in a timely manner. The soil was in a semi-humid state, and it should be drained in time to enter the rainy season. Leek has a strong resistance to fertility, planted deep before the site preparation, full-appropriate basal fertilizer, Mushi 2000 kilograms, fertilization principle is the use of organic fertilizer and inorganic fertilizer, the ratio is not less than 1:1. Fertilization should be based on the growing trend, weather, soil moisture conditions, to take the principle of light and diligent planting, seedling height below 35 cm, Mushi 2% compound fertilizer water 500 kg; seedling height above 35 cm, Mushi 3% decomposed manure 800 kg, At the same time adding 5 kg of compound fertilizer, the weather should increase the dilution of drought. 7. Pest control Common pests endanger the leek are mainly disease, gray mold, sclerotinia, green onion, leek, late eyes and other mosquitoes. Violet diseases occur in high temperature and rainy summer, spraying 72% Kelu wettable powder 700 times, once every 10 days, even 2~3 times; 50% carbendazim for grey mold of leeks and sclerotiorum Wettable powder 500 times liquid or 50% fastinking wettable powder 1000 ~ 1500 times liquid spray; leeks late eyes gnat mosquito, alias éŸè›†, can be found when the tip of the yellow began to become soft and gradually to the ground side volt The use of 40% phoxim EC 1500 to 2000 times or 48% of Lorenzine 2000 times sprayed, alternating use. Onion stalks use yellow plates to kill locusts or silver-gray films to drive flooding; chemical control uses 10% imidacloprid wettable powder 2000 times or 50% anti-inferiority WP 2000 to 3000 times spray. 8. timely harvest It is generally harvested once every 20 days or so. Copper Door Panel,Copper Door Cladding Panels,Copper Door Panels,Copper Door Panel Plate Zhejiang Tilanco Industry&Trade Group Co., Ltd , https://www.tilancogroup.com
High-yielding Cultivation Techniques of Leek
1. Soil conditions