Film greenhouse nectarine cultivation technology

The use of thin-film greenhouse cultivation of nectarine is a new approach to counter-season cultivation of fruit trees. It can control indoor climate, prevent natural disasters, promote fruit ripening, regulate off-season markets, expand cultivation areas, and increase production and income, in order to promote "two highs". The progress of the rapid development of the fruit industry and the acceleration of the acceleration of agriculture by the people have opened up a new path. In recent years. This high-input, high-output, high-effect industrial production has been recognized by more and more people and has been quietly rising in Northeast China, North China, Northwest China, Southwest China, Central China, and East China. The situation has broad prospects. Variety selection should pay attention to selecting good varieties such as “early red pearl”, “Amkan”, “Danmo” and “Zhaohong No. 2”, which are suitable for early-stage cultivation, high quality, and high yield of thin film greenhouse cultivation. Planting density according to years of experiments showed that the spacing of 100 cm, 75 cm spacing (planting in a triangle). About 660 plants per 667 square meters (1 acre) are suitable for intercropping in the second year, and the density is unchanged in the third to fourth years. The minimum height of the front foot of the fixed height is 30cm, and the dry passage is 50cm. It will form a slope, which will help occupy the space, increase the coverage, and increase the nectarine's result. 4. The shape of the tree body is based on the characteristics of low-to-north high south of the greenhouse structure of the film. The lower part of the southern part should adopt 2 or 3 main crowns with no side girdles, and the northern part should be crowned with free crowns. 5. Topping height in the growing season when the new shoots grow to 30 centimeters or so should be carried out when the picking, winter trimming length of 10 to 15 cm is appropriate, leaving a moderate amount of branch, the yield is also high. Chemical control For the fast seedlings planted in the same year, half of the seedlings should be sprayed with paclobutrazol 150 times each in late July and early August, so that the annual flowering rate can be increased by 69.5% and 65.3% respectively. 7. 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. 8. Temperature and humidity daily average temperature of 10 ~ 12 °C can be shed, 30 to 40 days after the shed can warm up. The suitable temperature: the germination period is 5～25°C, the flowering period is 4～22°C, the spreading leaf stage and the shoot growth period are 5～25°C, the hard nuclear period and the fruit expansion period are 10～25°C, the fruit coloring period Before the harvest, the temperature is 15 to 28°C, and when the outside minimum temperature is stable above 10°C, the grasshopper is removed, and when it is stable above 15°C, the greenhouse film is removed. Its suitable humidity: sprouting period is 70% to 80%, other periods are 50% to 60%. 9. Greenhouse structure length 60 to 80 meters, span 7 to 8 meters, ridge height 3 to 3.3 meters, back wall height 2 to 2.3 meters, back slope length 1.6 to 1.9 meters, the roof angle should not be less than 30 degrees. In general, arched circular greenhouses should be used, and the azimuth angle should be chosen to be south or south to the east, south to 5 degrees to the south, and the thickness of the cold-resistant soil on the back wall should be 1.5 meters at the base and 1 meter at the top. 10. Economic Benefits Utilization of thin-film greenhouse cultivation Nectarine is an advanced fruit production method with high technology content and good economic benefits. According to the practice of middle-class production for many years, it is possible to increase the value of pure production by more than 15,000 yuan per 667 square meters in general, and the economic and social benefits are significant.

Power Drill

Orthopedic electric drill is suitable for trauma surgery, our company mainly has Multifunctional Drill Saw System, electric drill,cannulated drill, High Torgue Acetabular Reamer Drill,Craniotomy Drill and so on.

Attention

1, Medical bone drill is a short-time operation product, each use time of 10 minutes, can not be used continuously for a long time.

2, The battery is strictly prohibited high temperature, high pressure disinfection, after the operation should be taken out of the battery from the medical bone drill, into the packaging box, if not used for a long time, should not be charged and discharged once, so as to avoid plate aging.

3,The charger power cord can not receive oil, chemical solution erosion and mechanical damage.

4, Master the function of the device and the correct installation and use of the method, pay attention to maintenance, only properly maintained, in order to extend the service life, so that expensive medical equipment to use longer.

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