Anniversary Cultivation and Cultivation Technique of Shallot
Chives have special pungent aromas and are cultivated all over the country. In recent years, the foreign trade market is promising and the planting efficiency is high. At present, the main fine varieties include “four seasons rice onionsâ€, “Jiangsu Xingoniu 21â€, and “Lu Ong No. 1â€. "Wait. The cultivation techniques are as follows: (1) Spring onions: Transplanted from November of last year to February of the following year, harvested from the beginning of April to mid-to-late May. (2) V. onions: transplanted from May to June, for the more summer species, used for autumn seedlings, planting 4000 m2 per acre seedlings. In summer, shade nets can be used to cultivate or interplant in the rows of high-stalk crops, which will supply the market in summer. (3) Autumn onions: Usually transplanted from early August to mid-September, and from mid-October to early January of the following year. When the onion is transplanted, the temperature is high, and wheat straw can be sprinkled between the rows to cool and moisturize. (4) Winter onion: Due to the low temperature in winter and the slow growth of shallots, the production of the late autumn onions is generally adopted to delay the harvest and supply the festival market. Soil preparation sites with flat terrain, good irrigation and drainage conditions, and fertile soil are not suitable for continuous cropping for many years. Normally, they are replaced with soybeans, corn, and other vegetable crops for 1-2 years. After the crop is harvested, it is ploughed and applied immediately after the crop is harvested. Generally, 2000-2500 kg of manure or manure is applied per mu, and 25-35 kg of vegetable-specific fertilizer is applied. 40 centimeters, 15-20 centimeters deep, ditch system must be matched, so that irrigation can be arranged. Its water source, soil and air quality should meet the requirements of pollution-free production areas. Transplanting chives propagated in ramets. Specific transplanting methods: Before the planting, the mother plants will be excavated and the long roots will be cut off. Unplug the strains by hand. The ramets should have stems and roots. Transplanting plant spacing is 12-13 cm 13-15 cm; spring onions, autumn onions can be suitable for sparse planting, planting 2-3 plants per hole, planting live water in a timely manner after planting. Fertilizer management of onion plants should be followed by timely application of thin water manure or urea 5 kg per hole for promotion of manure, generally every 12-15 days topdressing 1 times fertilizer, 1 application of urea per acre 5-8 kg, chlorine Potassium 4–5 kg, combined with fertilization and watering, keeps the soil moist. Before 15-20 days before harvest, the amount of nitrogen fertilizer must be increased. Normally, 15 kg of urea should be applied per mu, and biochemical preparations such as sprayed fertilizer and amino acid fertilizer should be sprayed at the same time to promote greening of the plants. Diseases, weeds and weeds The main diseases of chives are downy mildew and purple spot. It can be sprayed with 75% chlorothalonil wettable powder 600 times, and rust and soft rot can be treated with 15% triadimefon 1000 times, respectively. 72% agricultural streptomycin 4000 times control. Insect pests mainly include Spodoptera litura, cotton bollworm, green onion thrips, and leaf miner flies. Diffusion, Miman, card dead, and insecticide nets can be used for prevention and treatment, and 48% of Le Siben EC can be used for irrigation. In addition, control of grass weeds can be used in the weeds of 2-4 leaf stage selection of 10% chlorsulfuron or 15% fine stable kill control, can also use Shi Tian before the transplanting chives for soil treatment.