大棚香椿高产优质栽培技术（Cultivation techniques of high yield and good quality of Toona sinensis in Greenhouse）.doc

大棚香椿高产优质栽培技术（Cultivation techniques of high yield and good quality of Toona sinensis in Greenhouse） The characteristics of greenhouse Toona sinensis good quality, market early, high price and fast growth in sales, toon during the occurrence of pests and diseases, free from pesticides and harmful substances pollution, so the greenhouse is the ideal pollution-free vegetable of Toona sinensis. In recent years, we used plastic greenhouse cultivation of fast-growing Chinese toon, will open 1 - bred 2 year seedling in Greenhouse in high density planting, winter growth after the shift to the open field, each 667m2 can produce more than 12000 kilograms of Chinese toon 667 m2, income of up to 30 thousand - 50 thousand yuan, very substantial economic benefits, as the main cultivation techniques. 1 seedlings Chinese toon can be propagated by seed, root and shoot, root and stem cuttings. Because of the large amount of seedlings used in greenhouse cultivation, the method of seed raising and transplanting at present is adopted. 1.1 site preparation Seed seedling should choose fertile soil, loose texture, deep topsoil, convenient irrigation and drainage, Xiangyang, sunny land, do 20cm high ridge, the ridge surface is 1.2 m2. The first decomposedmanure 60 ~ 75 m3/hm2, and then deep plowing 30cm, then applying superphosphate 750 kg/hm2 or diammonium phosphate 750kg/hm2, rake thin, leveling. Before sowing 7d water 1 times, in 3 ~ 5D after shallow hoeing 1 times, in order to prevent moisture and soil compaction. 1.2 soaking seeds The new selection of full seed germination before sowing, rubbed off the wing membrane on the seeds, with the 10g/kg Formaldehyde Solution 20min immersion disinfection, then rinse with water, then pour 30 seeds to 40 DEG C in the warm water, and keep stirring until the water temperature to 25 degrees centigrade and scrub, and continue soaking seeds absorb enough water after 12h fish out into the seedling tray, germination, maintain the temperature at 20 ~ 25