1. Soil cultivation is an important management measure for cultivating green onions. Appropriate soil cultivation has the effect of preventing lodging, softening pseudo-stems, and improving light blue yield and quality. Onions should be soiled several times, approximately 4 times, once every half-month from the onion when the onion is 20 centimeters high. Every time the height of earth is raised, the green leaves are not buried, and if the soil is too shallow, the light blue can't be forced to elongate. If too much, it can cause rotten heart. In addition, when you cultivate soil, you must pay attention to: Do ​​not take too wide, too deep, so as not to hurt the root; soil should be photographed to prevent rain or water falling; soil over dry and wet should not be soil; soil should be in the afternoon When the leaves are soft, avoid scratching the leaves in the morning when it is crisp and tender. 2. Top-dressing fertilizer in a timely manner will help increase the overall output of Welsh onion. Project: Combine soil, chase and apply 50 kg/mu of farmyard manure in the ditch, or apply 7.5 kg/g of alfalfa calcium to water in the ditch. Generally, it can be applied twice. Watering takes the dry soil on the ridge and the soil in the ditch as the standard, so that dry watering, wet water stoppage, and drainage in case of heavy rain. 3, disease prevention and control of onion pests mainly downy mildew, brown spot, etc., available Danning 800 times liquid, Kaize 600 times alternating spray control, and even spray 2 to 3 times is appropriate. Insect pests mainly include horses and crickets. Thrips can be used to control vegetables, nitenpyram, pay attention to the use of silicone additives. The main hazards of wolfberry are light blue, and prevention should be the main method. You can use phoxim to kill leeks on the base of green onions before each cultivation. Otoscope Ophthlmoscope,High Quality Otoscope Ophthlmoscope,Otoscope Ophthlmoscope Details, CN Wuxi Biomedical Technology Co.,Ltd , https://www.wxbiomedical.com