无土栽培（Soilless culture）.doc

无土栽培（Soilless culture） Soilless culture Soilless culture method (1) water culture (two) fog (QI) training; (three) substrate culture Technical points of soilless culture (1) water quality (two) nutrient solution (three) physical and chemical properties of matrix; Requirements of soilless culture for substrates Prospect of soilless culture Difference between soilless culture and conventional cultivation Soilless breeding concept of soilless seedlings Advantages of Soilless Seedling Raising The necessity of Soilless Seedling Raising Soilless culture Soilless culture method (1) water culture (two) fog (QI) training; (three) substrate culture Technical points of soilless culture (1) water quality (two) nutrient solution (three) physical and chemical properties of matrix; Requirements of soilless culture for substrates Prospect of soilless culture Difference between soilless culture and conventional cultivation Soilless breeding concept of soilless seedlings Advantages of Soilless Seedling Raising The necessity of Soilless Seedling Raising [edit this paragraph] soilless cultivation Soilless culture (soilless culture) without soil, plants with solution culture method, including hydroponics and sand. In nineteenth Century, W. and Knoop developed the method. By 1930s the technology had been applied to agricultural production. In twenty-first Century, further improvement was made in the development of soilless culture. The use of artificial culture medium in the soilless culture provides the nutrition of plant minerals. Several commonly used nutrient solution formulas are listed in the table. In order to make the plant to be erected, quartz sand, vermiculite, peat, sawdust, plastic as the support medium, ventilation and can keep the root. Many years of practice have proved that soybeans, beans, peas, wheat, rice, oats, sugar beet, potatoes, cabbage, lettuce, tomatoes, cucumbers and other crops, soilless cultivation yield is higher than soil cultivation. Because of the nutrie