Lilium belongs to Liliaceae, whose flowers are available for viewing. The fresh stem is a vegetable with higher nutritional value and has high medicinal value. The economic benefit of planting lilies is high. Lily pollution-free cultivation techniques of edible lilies are introduced as follows: (1) Scientific selection of sites and adherence to rotation. Although the lily has a wide adaptability and can be cultivated in various soils, it is most suitable to choose a land with high topography, smooth drainage, loose soil, and fertile land. It is not appropriate to choose the fields where the former crop is pepper, eggplant and other crops. The most intimidation is to avoid serialization and revisit. At the same time, it is necessary to implement rotation so as to cultivate soil, reduce pests and diseases, and ensure high quality and high yield. (B) re-base fertilizer, finishing field blocks. Lily grows for a long period of time and requires a large amount of fertilizer, so replanting basal fertilizer is an important measure to win the high yield of lilies. Generally, basal fertilizer accounts for more than 70% of the total amount of fertilizer. Basal fertilizer mainly consists of mature organic fertilizers, generally 1500--2000kg of manure, 550kg of plant ash, 50kg of cake fertilizer, 20kg of compound fertilizer, and evenly spread in the fields before turning fruit, and deep into the soil. Before sowing, use 3 kg of green land per acre, mix 25 kg of fine soil, and spread it to the whole field for soil treatment. Then leveling and polishing. To achieve "flat, fat, net, smooth", that is, the field should be flat, fertile soil, clean surface, drainage and irrigation.畦 width 1.4--1.5m, sulcus width 30cm, depth 25cm. And to achieve the ditch, Yaogou, Weigou ditch matching, in order to facilitate drainage and irrigation. (c) Selection of bulbs, strict disinfection. Selected disease-free bulbs. Selection of species should be used bright color, cohesion, strong root system, no pests of the bulb. Select the size and net weight 25--30g as appropriate. Strictly sterilize the bulb, generally use 50% carbendazim 500 times liquid soaking for 20 minutes, remove and dry to be sown. (D) timely sowing, rational close planting. The suitable sowing date for our country is mid-to-late September. It can also be advanced as early as possible. The former crop is a medium- and late-soon rice field and should be sown before the middle or late October. Density is 20cm between rows, 25cm spacing, 12,000-14,000 per acre. When sowing, the seedling ditch is first opened with a pestle, the depth is 5--8cm, and then the seedling ditch is sprayed with 500% of 50% carbendazim. Then according to the spacing of the planting soil cover or cover fire ash, but do not cover too thick. It is then sprayed with thiophanate-methyl and covered with a plastic film. (five) after filming sowing, check seedlings fill deficiency. After sowing, the covered film not only protects the earthworms, warms the grass, but also protects against heavy rain, and the soil should not be hardened. Lily species need to emerge after 5-6 months, and seedling stage should be done to break membrane ventilation seedlings. Also seal the membrane to prevent weed growth. Within one week after emergence, the seedlings should be checked for deficiency and replenishment. Also pay attention to the drainage of the ditch and prevent waterlogging at low temperature. (6) Weeding and weeding, timely topdressing. Post-emergence weeding before weeding, usually with glyphosate, butachlor and other dryland special herbicides. When the seedling height is about 10cm, weeding and weeding are conducted twice in a timely manner. After budding, a deep cultivator is generally conducted in early May and soil is taken care of. After the flower buds are removed, a shallow cultivator is used with a depth of 4 cm. The fertilizer should be applied in a skillful way, mainly for manure and urine, and usually 3 times for fat. The first time in the Qi Miao, Mushi cooked manure urine 500--1000kg; the second time in the seedling height 10-15cm, Mushi composting manure 1000--1500kg, fertilizer application method, but Not close to the plant to prevent "burning". After collecting bulbous shoots, the topdressing is performed for the third time to increase fertility to prevent premature senescence, which is the critical period for the formation of high lily production. Generally, 10kg compound fertilizer is applied in Mushi, and another 0.2% potassium dihydrogen phosphate solution is sprayed on the leaves. (seven) timely pick buds, pest control. After bud emergence, when bud color is not open, buds should be removed timely, mainly to control lily growth and promote rapid bulb expansion. At this time do not blindly topdressing, so as to avoid stem section festival, affect the development of fat bulbs. Lily pollution-free cultivation of pests and diseases prevention and control principle is "prevention-based, comprehensive prevention and control." Bacterial blight and root rot are the main diseases of lily. In addition to bulb treatment and soil treatment, they are prevented with Bordeaux mixture at the seedling stage and treated with thiophanate-methyl 500-fold solution after onset. At the same time, it is necessary to dredge the Sangou, and timely discharge the work after the rain to reduce the humidity in the field and reduce the occurrence of diseases. At present, lily pests in China are mainly harmful to underground pests, and soil treatment must be done before sowing. At the same time, the applied farm manure must be fully decomposed. If pests are found, phoxim can be used to control the roots of water irrigation. Indus leaves can also be used to cover the ground and be manually killed the next morning. (8) Harvesting at a timely manner and keeping seed at a grade. The bulbous shoots are harvested in mid-June, and the harvested fresh lily is marketed in late June. The processed lily can be harvested at the great heat, and the preserved seeds can be harvested before and after the beginning of autumn. When harvesting, the quality of seeds is strictly controlled, so that the selection of seeds can be combined in the field and in the room. The commodity lily seeds and seed lily seeds can be collected and stored in a single grade. In particular, it must not be exposed to the sun after harvest so as not to affect the quality. China Agricultural Network Editor