Greenhouse planting peach tree method
One, in addition to Meng pruning. The buds of the peach trees in the greenhouse are removed in time to unreasonably sprout. After flowering, the dense branches, leggy branches, erect branches, light branches, and cross branches were promptly removed. 4 to 6 weeks before the harvest, the over-stretched fruit tree, leaving only one new shoot before the shoot, can be appropriately short-cut part of the shoot. It is advisable to adjust the structure of the tree to have a uniform blotch under the noon tree. Second, control the crown. Each bone stem keeps a prosperous new shoot in an appropriate direction. When the upwardly growing fruit-tree subshooter grows to 10 large leaves, it continuously picks up the heart and wipes the lateral buds to form a blind stick; 50 times for other prosperous shoots. %PP333 tipped. Take these measures to effectively control the growth, increase the yield per plant, reduce the physiological and pre-harvest drop. Third, picking leaves hanging sticks. 20 days before fruit picking, the affected leaves of the fruit were removed and the hanging branches were lifted to the light-receiving surface to promote fruit coloring. 4 to 6 weeks before harvesting, hanging a drooping fruit branch with a rope or pulling it over the canopy can greatly improve the lighting condition of the tree and increase the coloration of the fruit. Fourth, spraying plant growth regulators and fertilizers. In the flowering period and two weeks after flowering, each fruit was sprayed with LXL or fruit shape containing 1.8% of GA4+7 and 1.8% of 6-benzyl adenine, which increased fruit setting rate and promoted fruit enlargement. About 10 days after the peach blossom, spray 2 to 3 times 0.5% urea and 0.2% potassium dihydrogen phosphate mixture, spraying should be carried out in the windy evening or cloudy days, spraying once every 2 weeks. Fifth, top-dressing watering. Peach fruit hard core period, fruit enlargement period of the top dressing once, each carbamide catch 30 grams, 30 grams of potassium dihydrogen phosphate. Combined with fertilizing each watering time, the amount of watering depends on soil moisture conditions. Six, prevention and treatment of pests. 1 disease. The main diseases are peach bacterial perforation, mold perforation, and brown spot perforation. Before the budding, evenly spraying the Baume 5 degree lime sulfur agent on the tree body can reduce the source of pathogenic bacteria and the overwintering base number of pests. After the root disease was discovered, it was timely rooted with a multi-effect liquid. 2 Insect pests. Myzus persicae, whitefly, peach aphid, mainly damage leaves, shoots. Commonly used pesticides such as one-time net, fast killing spirit and enemy killing. 3 Prevent pests after fruit picking. After the fruit is harvested, peach trees in the greenhouse should also be strengthened to control pests and diseases, combined with foliar fertilizer, in order to prevent abnormal defoliation in the early autumn and promote the photosynthetic efficiency and accumulation of photosynthetic products in leaves, which can overcome the lack of storage nutrients. Poor flower bud differentiation and degradation of pistil.
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The virus and related samples in the VTM virus sampling tube should be stored and transported within 48 hours in a refrigerated state (2-8°C). Viruses and related samples can be stored for a long time in -80℃ environment or liquid nitrogen environment. The virus can maintain the activity of the virus in a lower temperature range, reduce the speed of virus decomposition, and improve the positive rate of virus isolation.
The VTM virus sampling tube is generally equipped with a disposable flocking swab. From the appearance point of view, the flocking swab is white and soft. Using this soft brush during the sampling process will make the user feel no foreign body, and it is suitable for different Partial sampling person. Moreover, the flocking swab is designed with a breaking point that conforms to the length of the sampling tube and the natural orifice of the human body, which is not only convenient for sampling but also convenient for transportation of the specimen.