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December pollution-free vegetable production calendar (5)
Cucumbers in protected areas generally promote grafting techniques, ie, selection of black pumpkins resistant to low temperature, resistance to vegetative diseases, and good affinity for cucumber scion as grafting. Grafting methods are divided into plugging, cutting and docking, but the plugging method is the most convenient and the survival rate is high. With the cucumber seedlings sown for about 10 days, a wedge of 1 cm long was cut at 1.5 cm below the cotyledon to form a scion, and seedlings were planted with pumpkin seedlings for 10-12 days. When plugging in, first cut off the heartwood leaves, and then use a fine bamboo rake to insert 1cm deep from the 30 angles of the rootstock leaves, then insert the scion into the hole, and the scion cotyledons and the rootstock cotyledons are cross-shaped and tightly inserted. To prevent wilting of plants, pour water immediately after grafting. Make a shed to tie up the grafted seedlings and shade them properly. In the small arch shed, the daytime temperature was 25-28°C and the night temperature was 18-20°C. The wound healed completely in about 7 days. In order to avoid seedling growth, the small arch shed was removed after the wound had healed. The night temperature of the seedbed was reduced to 13-15 °C. X. spring greenhouse tomato seedling management when the seedlings grow two true leaves, seedlings in a greenhouse points. 10 m2 divided seedbed decomposition fine sieve 140-150 kg organic fertilizer, potassium sulphate 0.5 kg or 1 kg NPK fertilizer. By the method of paper (bowl), nutritional earthwork sub seedlings, seedbed some deep do first, about a depth of about 15 cm, the soil is not turned furrow, without fertilization, the bottom plot leveling, can be practical. Then installed paper bag potting (bowl) or nutritional earthwork yards on a side by side in bed, but also do simple cube. Per acre tomato greenhouse in spring takes about 40-45 square meters divided seedbed preparation can also be prepared 5000-6000 nutrition paper bag (bowl) or nutritional earthworks.