1 site selection Choose land with convenient transportation, no pollution source, flat terrain, energy irrigation, shelter from the wind, strong soil, fertile, and a soil value of 4.5 to 7.5 (preferably 5.5 to 6.5) or sandy loam. Generally, the garden is built in two ways. One is to plant the peach seedlings in the spring according to the requirements of the construction of the shed, leaving the shed for construction, and the shed for production in the autumn; the first is to build the shed and cultivate the peach seedlings in the shed. 2 variety selection In the selection of varieties, we should pay attention to the following requirements: choose high-yield and high-quality varieties with short tree body, compact canopy, large fruit, storage and transportation, adapt to weak light, high humidity and other environmental conditions. Generally, the peach can be selected from Chunxue, Chunyan, etc.; the nectarine can be selected from Zhongyou No. 4, Jinhui, Zhongyou No. 16, etc.; the peach can be selected from the early morning peach, early oil and so on. 3 colonization According to the tree shape to be used, different cultivation densities are used, and 1m1m, 1m1.5m, and 1m2m are often used. The greenhouses are mostly constructed with north and south sheds. The peach trees are planted in east and west rows, and the thinning is carried out according to the growth of peach trees. The first-class strong seedlings with a height of 80cm and a thickness of 0.6cm or more are selected. The diameter of the planting hole is 35cm or more and the depth is 35cm or more. Watering is immediately after planting the seedling, and the film is oozing after the water is infiltrated. 4 soil and fertilizer management The soil is covered with mulch film, and the management of fertilizer and water is carried out according to the principle of “pre-promotion and post-controlâ€. That is, in Dalian, before July 20, a small amount of fertilization and irrigation were carried out several times to promote the vegetative growth of peach trees. From July 20th to the end of August, water control and fertilizer control promoted the transformation of vegetative growth to reproductive growth. After drying, the newly grown shoots are topdressed at 20-35 cm, with nitrogen fertilizer as the main fertilizer and 25 g of urea. It should be applied once every 15 days until around July 5, and water should be applied after the application. Spray 0.3% potassium dihydrogen phosphate in early August. From the end of August to the beginning of September, according to the application of high-quality decomposed organic fertilizer or bacterial fertilizer 10~15kg, plus 0.5~1 kg of trace elements for autumn fertilization. After 10 days of warming, the pre-flowering top dressing was carried out, and the compound fertilizer was applied 150g. In the hard core stage and the fruit expansion stage, the special fertilizer or compound fertilizer of the plant was 150-200g. The watering is mainly determined by the lyrical situation. In addition to the watering before the watering is applied, the watering should be carried out in a small amount in the late stage of fruit expansion, which is uniform and uniform to prevent cracking. 5 plastic trim The plastic trimming needs to achieve the purpose of ventilation and light transmission. According to the structure of the greenhouse, the sides of the shed adopt a happy shape, and the middle adopts a trunk shape or a Y shape. In principle, no side branches are left, and the result branches are directly formed on the trunk. At the time of planting, 40cm on both sides will be fixed, 50cm in the middle will be fixed, and the main branch will be selected after the new shoots are germinated. When the other branches are 30~40cm long, leave about 25cm, and promote new branches. When the new branches grow to 25cm, leave about 20cm. tip. The pruning before warming is mainly based on sparse branches, and the dense branches, weak branches and diseased branches are removed. After fruit setting, as the fruit grows, the branches need to hang the branches, and depending on the situation, the photosynthesis is enhanced to increase the fruit taste. After harvesting, it is necessary to trim and promote new shoots in time, and determine the amount of staying branches according to the tree structure and space. 6 temperature and humidity management 6.1 Dormancy period The Dalian area entered low temperature dormancy in late October, and the dormancy temperature was within 0~7.2 °C for effective dormancy. When sleeping, it is necessary to determine the sleep mode according to the characteristics of the product and the time to market. If the natural sleep cannot meet the requirement of the required cooling capacity, forced sleep can be used. That is, the daytime temperature is higher than 7.2 °C, the quilt is put down and the temperature is lowered, and the shed is ensured that the tree is dormant at night. 6.2 Production period After the cooling capacity is satisfied, it is ready to heat up. The cultivation of greenhouses is based on quality and fruit size. The maturity period is from April to May, and the heating time can be calculated according to the expected harvesting period and the fruit development period of the variety. The temperature rises in a gradual manner, starting three days to control the day at around 15 ° C, then increasing by 2 ° C every day, until 25 ° C, until 7 ° C at night, humidity about 70% until flowering; flowering period day temperature 18 ~ 22 ° C, The minimum temperature at night is maintained at 8 to 10 ° C, the average temperature is 12 to 14 ° C, and the humidity is about 50%; the fruit growth temperature is 24 to 26 ° C, and the humidity is about 50%. 7 flower management Generally, bee pollination is used. One box of bees is placed on one acre, and the best time to put bees is to use 1 to 2 flowers per tree. Artificial-assisted pollination can also be used, and flowers can be blown with a small fan to promote pollination 1 or 2 times a day. You can also gently kick the trunk with your feet to promote pollen movement. The amount of fruit retained is determined according to the growth and development of the tree. Generally, the long fruit branches retain 2 to 3 fruits, the middle fruit branches 1 to 2, and the weak branches leave 1 or no fruit. 8 pest control The incidence of pests and diseases in greenhouses is relatively small, mainly bacterial perforation, aphids and red spiders. Based on biological control and physical control, it promotes biological control. According to the law of occurrence of pests and diseases and economic threshold, scientific use of chemical control technology to effectively control pests and diseases. The incidence of perforation can be 800 times that of mesomycin, 5% of imidacloprid EC can be used 2000 times, and spider mites can be controlled by 20% triazolyl suspension 2000 times or 73% gram of 2500 times. Disclaimer: Some articles on this website are transferred from the Internet. If legal rights of third parties are involved, please inform this website. phone Home AIDS are items we can't live without in our daily lives. They can help us take better care of our health and that of our families. Here are some common home AIDS: Home measuring instrument,necessities of life,AIDS are used in the home TRUTECH CO., LTD. , https://www.wxgrabbar.com
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