The greenhouse toon planting time in mid-October, before entering the roc toon seedling dormancy general dormancy time of about half a month after entering the greenhouse, the toon seedling is generally forty-five days after the germination, and its main cultivation techniques are as follows.

1. building and transplanting

1.1 building

Adopting the ordinary a slanting a vertical plastic film daylight greenhouse shed, north-south width of 8 meters, east-west length of 40 meters, the wall is built with soil, the back wall is 2 meters high, 60 centimeters thick, the ridge height of 2.4 material, the shed with cement columns as a stent, the shed in front of the slope of the bamboo poles for the beams, covering the ordinary polyethylene film, the night plus the cover of straw straw thatch. Shed back slope with corn stalks, wheat straw mud pier solid, cold insulation.

1.2 Transplanting

Early to late November to transplant the toon seedlings in the shed. Before planting, mu of diammonium 100 kilograms, chicken manure 5000-10000 kilograms, deep turning 60 centimeters, harrowing fine columbine flat, as a bed 1 meter wide, the ridge width of 40 centimeters, easy to walk into the picking buds, mu planted 8-10 million plants. Fixed value after 10-15 days for the slow period, 10 ℃ during the day; promote the birth of the period of daytime temperature 18-23 ℃, night 13-15 ℃.

1.3 Shelter management and picking buds and post-picking management

Watering fixed-type planting water after fixing the planting, to be filled and watered to the full. The second water in the picking of two crops of toon after the third watering, before the third watering, to chase the mixed diammonium and urea 25 kilograms, so that it dissolves with the water. At the same time with 0.5% urea and potassium dihydrogen phosphate, every other week alternately sprayed on the foliage of the toon for foliar fertilization. Every morning should roll up the front slope grass thatch, in order to maintain a suitable temperature in the shed. When it snows, snow should be swept off the roof of the shed in time to prevent pressure damage to the shed. Seedlings into the shed about 50 days or so, the terminal buds can grow to about 20 cm, this time the first picking buds. The first time only the top buds and removed to promote the growth of axillary bud sprouting. After picking buds should be timely fertilizer watering. Then when the buds grow to 15 centimeters to start picking, at the same time the bud base to retain 1-2 leaves, to promote its regeneration of new shoots. Picked parsnip buds should be spread out to dissipate moisture cooling, do not pick with the bundle with the plastic bag, in order to prevent the buds heat off the leaves, reduce the quality of the buds. After the end of the whole period of picking buds, at the end of April, the seedlings are transplanted in the field of lazy, 6-7 months of vigorous growth, can be sprayed with doxorubicin 300 times the liquid for dwarfing treatment, and then transplanted to the greenhouse after the frost to grow and pick buds.

2 Post-planting management

2.1 Timely buckling

General toon has a period of physiological dormancy after the fall of the leaves, if the planting of early, late buckling, otherwise the toon buds are not easy to sprout and poor growth. If planted after the second half of November, the planting immediately after buckling, at this time, toon bud dormancy has been lifted, should immediately raise the temperature to promote germination.