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Zucchini Grafting Seedling Technology
1. Root stocks and scion selection Rootstocks are selected from black-skinned squash, southern anvil or Renwu, warriors, warriors, and co-prosperity. Scion summer squash is selected according to the cultivation times and types and varieties. Autumn and winter sorghum cultivation uses heat-resistant, medium-to-medium-maturing and late-ripening cultivars resistant to viral diseases. Such as: a generation of the Arab-Israeli, gray Cai Ni, spring and autumn, etc.; wintering alfalfa cultivation selection of low temperature resistance, high temperature in the low temperature conditions of the high rate of ripening and precocious semi-manifold type of fine varieties. Such as: black and beautiful, the sun 9795, and so on. In winter and spring and early spring cultivars, extremely early-maturing and early-maturing dwarf type cultivars with particularly strong cold resistance and fast growing speed should be selected. Such as: As early as No. 1, Emerald, Sun 007, Silver Generation, Gourd and so on. Second, the appropriate sowing schedule plans to fall winter pods, overwintering pods, winter and spring squash picking the first harvest period are arranged in the market higher prices of melon vegetables in mid-November, late December and early February, the appropriate sowing The period is in late September, early November and mid-December. Overwintering and sowing can be advanced as early as mid-to-late October. The fall/winter sowing time should not be advanced any earlier. The winter and spring sowing time should not be postponed until January. Third, preparations before sowing 1. Shi Jifei, Mushi fully fermented and cooked chicken manure 5-7m3, 9-11m3 high-quality ring fertilizer and 30-40 kg of diammonium phosphate, 50-60 kg of potassium sulfate. Fertilizer evenly spread on the ground and floated to a height of 30 cm. The fertilizer was turned into the tilling layer and the ground was raked. 2. Disinfection and high-temperature stuffing shed sterilization 10-15 days before sowing, in the shed on the ground spray more than 1 kg of dust agent per mu 1kg, after the use of 45% chlorothalonil smoke agent 1 kg, drowsy shed smoke, continue to Yan Close the shed for 4-5 days at high temperature, and the highest temperature in the shed before and after noonday can reach above 60°C, which can effectively kill bacteria and eggs. 3. Set the seedbed to set 3 seedbeds, one is the zucchini seedbed and the other is the black seed pumpkin and other rootstock seedbeds. The second is planting seedlings with grafted gourd seedlings. Zucchini and black seed pumpkin seedlings are built 120cm wide from east to west, about 7cm above the earth's surface, depending on the amount of seedlings. The nutritious soils of the 3 nursery beds were mixed with 3 fertile garden soils and 1 rotten manure, and 400-500 grams of urea and 5-6 kilograms of plant ash were added to each cubic meter of nutrient soil. Into the shed to do building a bed. 4. Seed treatment Mu with anvil pumpkin seeds 2.5 kg and pumpkin seed 1-1.2 kg. To prepare seed for seedlings, black seed pumpkin seeds are first exposed to sunlight for several hours, then soaked in hot water at 65°C and stirred continuously until the water temperature drops to 25°C. The mucus was soaked in warm water of 30°C-35°C for 8-12 hours, removed and placed in a sterile wet-sandbag. After being covered with a cloth, it was placed in an environment of 28°-30°C. Germination. When the anvil with 50% of the pumpkin seeds show "sesame white", the zucchini is immediately soaked. First put the sun-dried zucchini seeds into hot water at 55°C-60°C, and then keep stirring until the water temperature drops to 25°C. Then, remove the mucus from the seed coat by hand and replace it with 30°C-35. After soaking in warm water at °C for 8 hours, do not germinate and sow the pumpkin seed with germinated anvil at the same time sowing into the respective seedbed. Fourth, the sowing method The seedbed is first irrigated with water, and when the water is about to infiltrate, the seeds are sprinkled one by one on the seedbed. The sown pumpkins are sown at a distance of about 1.5 cm and the zucchini is sown at a distance of 2.5-3 cm. After sowing, 72.2% Preclosure 1000 times was sprayed to prevent damping-off during the seedling period. Cover 2–2.5 cm of fine dry soil and pay attention to leveling the soil. Spray a 50% phoxim 800-fold dilution to control underground pests. The temperature in the small shed is controlled at 28°C-31°C, and the temperature of the anvil pumpkin seedlings in the small arch shed is 33°C-37°C. Pay attention to regular observations, adjust the temperature according to the emergence of seedlings so that both seedlings emerge simultaneously. (To be continued) (Reporter "Science & Technology 110" expert)