The use of thin-film greenhouse cultivation of nectarine is a new technology for counter-season cultivation of fruit trees. It is beneficial to control indoor air temperature, prevent natural disasters, promote fruit ripening, regulate off-season markets, expand cultivation areas, and increase production and income. First, the selection of varieties to choose the suitable film greenhouse cultivation of early mature, good quality, high yield of the "early red pearl", "Amkan", "Danmo" and "Zhao Hong 2" and other fine varieties. Second, the planting density According to many years of testing shows that the spacing of 100 cm, 75 cm spacing (planting a triangle), under normal circumstances, planting 660 per acre is appropriate. In the second year of intercropping, the density is unchanged from the third year to the fourth year. Third, the fixed height of the front foot of the minimum height of 30 cm will be dry, after the aisle 50 cm to dry, so that the formation of a slope, in order to facilitate the occupation of space, increase coverage, increase the nectarine results. Fourth, the shape of the tree according to the characteristics of the film greenhouse south of the lower north high, the southern low should use the 2nd or 3rd main crown small crown without side happy shape, the northern high should use small crown free spinning braided shape. Fifth, topping height in the growing season when the new shoots grow to 30 centimeters or so should be carried out when the picking heart, winter trimming the length of the branch to 10 cm ~ 15 cm is appropriate, leaving the amount of moderate, high yield. Sixth, chemical control of the quick-Seedling, semi-seedlings planted in the year, should be sprayed in the late July and early August each 150 times a solution of paclobutrazol, can make the flowering rate increased by 69.5% to 65.3%. VII. Pollination methods Nectarine plants grown in film greenhouses have low natural pollination rates. Practice has proved that the method of adopting bee pollination, artificial spotting and liquid pollination is more appropriate, and the fruit setting rate can be increased by 33%, 26.3% and 21.2% respectively compared with the control. Eight, temperature and humidity According to the determination of the situation, the daily average temperature of 10 °C ~ 12 °C can be shed, in the buckle shed after 30 days to 40 days to warm up. The suitable temperature: the budding period is 5°C～25°C, the flowering period is 4°C～22°C, the spreading leaf stage and the shoot growth period are 5°C～25°C, the hard nuclear period and the fruit expansion period are 10°C～25°C, The fruit coloring period and before harvest are 15°C to 28°C. Nine, greenhouse structure length 60 meters to 80 meters, span 7 meters to 8 meters, ridge height 3 meters to 3.3 meters, back wall height 2 meters to 2.3 meters, back slope length 1.6 meters to 1.9 meters, the roof angle should not be less than 30 degrees . In general, arched greenhouses should be used. The azimuth angle should be 5 degrees south or south east and south west. The base thickness of the back wall of the cold soil is 1.5 meters and the top is 1 meter.
Seedling
Robinia Pseudoacacia,Sophora Xanthantha,White Tephrosia,Pigeon Pea
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