How to plant Yunnan white chicken

1, firstly, soil preparation and fertilization; Choose sandy loam with deep soil layer, fertile and loose soil layer, good drainage, rich humus and moist plot for planting. After harvesting last season's crops, plough the soil more than 20 cm, apply decomposed manure or compost 1500-2000 kg per mu, and turn it into the soil as base fertilizer. Then make a bed and wait for sowing. 2. Sowing: Bletilla striata propagates through underground tubers. The sowing date is divided into autumn sowing and spring sowing. Autumn sowing is before freezing, and spring sowing is before and after Qingming. The south is suitable for sowing in autumn. When digging Bletilla striata in autumn, choose a strong and pest-free tuber of Bletilla striata, cut it into small pieces, each piece has 1-2 buds, cool it slightly to heal the wound, and then plant it on the whole edge. When sowing in Yichun in the north, the stored bletilla striata seed blocks are taken out, cut into blocks, and sown after the wound is healed. The row spacing is 30 × 20cm. Water that preserves moisture for survival.

Pay attention to field management during planting, ① intertillage weeding: Bletilla striata plants are short and can't restrain weeds, so we should pay attention to intertillage weeding, usually 4 times a year. After the first emergence in March-April; The second time, in June, weeds grow vigorously, and bletilla striata seedlings are short. Weeding should be done in time to avoid grass shortage. The third time was in August-September; The fourth time, harvest intercropping crops, hoe the box surface, and eradicate weeds. Every time you plow, you should hoe shallowly to avoid hurting buds and roots. ② Water management: Bletilla striata likes humid environment, and the cultivation area should be kept moist frequently, and it should be watered in time when the weather is dry. During the drought from July to September, water should be poured once in the morning and once in the evening. Bletilla striata is also afraid of waterlogging. During the rainy season or after each heavy rain, the water should be drained in time to eliminate excess water and avoid root rot. ③ Topdressing: Bletilla striata likes fertilizer, so it should cooperate with intertillage weeding and topdressing 3-4 times a year. You can use Lamla special fertilizer. After the seedlings are planted for the first time in March-April, 4-5 kilograms of ammonium sulfate is applied per mu, and the decomposed light fertilizer is mixed. The second time, during the vigorous growth period from May to June, 30-40 kilograms of calcium superphosphate was applied per mu, and the fully matured compost was mixed and spread on the surface of the compartment, and mixed into the soil in intertillage; The third time, August-September, 2000-2500 kg of decomposed human and animal manure mixed with soil and miscellaneous fertilizer was applied per mu. ④ Intercropping with other crops: Bletilla striata is short, grows slowly and has a long cultivation period. In the first two years, it is feasible to plant short-term crops, such as radishes and vegetables, to make full use of the land and increase income.

Pest control. At present, no diseases have been found in the cultivation of Bletilla striata, but the main pests are underground pests, the black cutworm.

Prevention and control methods: ① In the peak period of overwintering adults, use light or sweet and sour liquid to trap and kill adults. (2) Damaged plots can be captured manually.