How to produce high-yield glass lettuce? What are the field management jobs? How to prevent pests and diseases? Wait, these problems are all needed when planting glass grows. Only by mastering the corresponding planting techniques, if you want to grow high-yield and high-yield glass lettuce, the success rate will not be very low. The questions are answered one by one, and I hope to help everyone in the vegetable growing industry. First, timely planting (1) Glass lettuce is not heat-resistant, so it should avoid the hot season when planting, or take measures to cool down when planting. For example, Guangdong is planted from August to March of the next year, and other areas are Plant at the right time according to local climatic conditions. (2) The glass lettuce seedling age is 25 days, and the length of 4-6 true leaves can still be planted. (3) When planting, planting is carried out at a distance of 14×18 cm. (4) It is necessary to bring soil protection during planting and timely plant water. (5) The depth of planting is appropriate to bury the land, and the heart leaf cannot be buried. (6) After planting, apply 4000-5000kg of organic fertilizer, 20kg of superphosphate, or 50kg of compound fertilizer per acre. Second, field management (1) Glass lettuce requires more fertilizer, so the principle of fertilization by diligence is applied. (2) Apply a small amount of quick-acting nitrogen fertilizer 5-6 days after planting; after 15-20 days, apply 15-2kg of compound fertilizer per acre; after 30-30 days, compound fertilizer 10-15kg. (3) It is not possible to use manure and urine for top dressing in the middle and late stages of glass lettuce. (4) After the cultivation of the glass lettuce, the water needs to be large. Therefore, it is necessary to properly water the soil when the soil is wet according to the weather conditions after the slow seedling. Generally, the water is poured once every 5-7 days. (5) It is necessary to control the amount of watering in the middle and late stages of glass lettuce, and the humidity in the shed should be controlled in the greenhouse. (6) Controlled watering 5 days before harvesting. Third, pest control (1) Common pests and diseases of glass lettuce include: sclerotinia, soft rot, aphids. (2) Pest control measures a. Choose resistant varieties and do field work; b, autumn and winter and spring is the peak period of aphid damage, can be used 40% dimethoate emulsion 600-800 times liquid, or 50% sputum fog 2000-3000 times liquid spray control; c. Sclerotinia sclerotiorum often occurs in February-March, and can be controlled by spraying with 5% keering WP 1000 times solution or 50% chlorhexidine WP 1000-1500 times solution; d, soft rot often occurs in the hot and rainy season, can be controlled with 47% of the ruthenium WP 1000 times, or 77% can kill the WP 500 times spray; e. Stop taking the drug 15 days before harvesting. Endoscope Displsy System,Endoscope Zoom Coupler,Endoscope Optical Adapter,Optical Rigid Endoscope ZHEJIANG SHENDASIAO MEDICAL INSTRUMENT CO.,LTD. , https://www.sdsmedtools.com
Vegetable cultivation: methods and techniques for growing glass lettuce