Bed soil should be fertile, loose, with a high degree of water retention and good permeability, no invasive diseases and pests, rich in mineral nutrients required for seedling growth and moderate pH. Natural soil cannot meet the above requirements and must be manually prepared. Many vegetable gardens have been cultivated for many years, which often leads to a large number of disease at the seedling stage. It is desirable to use onions and garlics for 13-16 cm topsoil, turn over the sun, sifted and used. The excrement required to fully ferment and decompose, mainly pig manure, horse manure, chicken manure, human waste and so on. The nutrient soil is composed of loose field topsoil, decomposed organic fertilizer and suitable quantitative fertilizer. The ratio of field soil and organic fertilizer is 6:4, 0.5 to 1 kg of diammonium phosphate per cubic meter of nutrient soil, and the fertilizer is first dissolved in water. Spread the prepared nutrient soil and spread it evenly. In order to prevent soil-borne diseases, soil disinfection is required, and 5 to 10% of carbendazim per square meter of nursery bed is mixed with appropriate amount of fine soil, and 2/3 of them are sprinkled on the bed surface to make soil. 3 mixed with soil after sowing. Or use 25% Rhizoctonia 50 grams to add 50 kilograms of water, mix and then spray 1,000 kilograms of nutrient soil, mix evenly while spraying, and spread it on the seed bed after accumulating for 1 hour.
Palm Recognition Time Attendance
Palm Recognition Time Attendance,Biometric Time Attendance System,Biometric Face Recognirion Software,Palm Recognition Temperature Face Time Attendance
Chongqing Huifan Technology Co., Ltd , https://www.huifantech.com