How to manage planting plum trees in greenhouse?

How to manage planting plum trees in greenhouse? Please refer to the key points of plum management techniques for greenhouse cultivation as follows: 1. The heating method after buckling the greenhouse. After buckling the shed, it gradually heats up, which is carried out in three steps. The first step is to "pull one at two intervals" during the day, that is, pull up the grass curtain for about a week. The second step is to "pull two every other" during the day, that is, to pull up the grass curtain of 2, 2 and 3 for a week. The third step, pull up all the grass curtains during the day, the temperature is too high can be ventilated and cooled. 2. 20-30 days before plastic film mulching, sufficient water was filled, and plastic film was covered on the tree plate to increase the ground temperature, reduce water evaporation and reduce the humidity in the greenhouse. Spraying paclobutrazol of 800 × 10 ~ (- 6) and 1000 × 10 ~ (- 6) concentration in March, early June and early July respectively can effectively control crown, inhibit growth and promote flower formation. 4. Greenhouse cultivation lacks pollination media, such as bees and wind. In addition to the configuration of pollination trees, the effect of releasing bees at flowering stage should be better. In addition, artificial pollination can also be used to spray 0.3% potassium dihydrogen phosphate in the young fruit stage, all of which can significantly increase the fruit setting rate. The 5-and 2-3-year-old plums were girdled one month after flowering to inhibit the growth of young and prosperous trees, increase the proportion of short branches, promote flower formation, and advance the fruit ripening period. The width of girdling should be lower than 10 at the stem perimeter. The girdling is too wide and the tree potential is too weak to achieve the purpose. 6. Pest control. The main diseases of plum in greenhouse are perforation and scab, which can be killed by spraying 1000 times peach hole scab twice with foliar fertilizer, and the main pests are shell insects and aphids, which can be sprayed 1-2 times after sprouting at 1000 times speed. Click to get more plum tree planting techniques click to get more fruit planting techniques