First, seedling cultivation:
1. Nutrition bag nursery: The seeds are sown in the greenhouse for 6 weeks before planting. The first step: put the seeds in 60-degree hot water, stir for 15 minutes, until the water temperature drops to 35 degrees to stop, and then soak for 12 hours; the second step: put the soaked seeds into the hotbed for germination The time is 24 hours and the seeds that are about to sprout are cleaned with 20 degrees of warm water for 12 hours. After 24 hours, the seed coat broke and a small 1 cm long shoot grew. At this time, it entered the nursery stage of the nutrition bag. In order to ensure the quality of the nursery, the organic fertilizer and the soil can be mixed into the nutrition bag in proportion. Since the weather was cold at the time and the temperature was low, 30 degrees of warm water was used when pouring the bottom water. After pouring water at the bottom. The seeds of buds were placed in a nutrition bag, and about 0.5 cm of soil was put into the soil, and then 2 cm thick fine soil was applied, and the mulch was covered. It was expected to be unearthed in a week. Individuals have already been excavated on the fifth day. At this time, the first and the unearthed ones should be cultivated separately to facilitate the control of temperature. After the melon seedlings were flushed for 10 days, they were planted at low temperature.
Nursery to planting can not exceed 45 days, seedling period is the best period in 35 days. When the seedlings grow to 4-5 leaves, transplant them to the field, dig a pit with a diameter of 1 meter and a depth of 60CM, and fill the pits with the proportion of mature farmyard manure and soil in a ratio of 1:1. Cover the soil of 5CM and plant the seedlings on it. Then use a thin bamboo rod to support an arched shed and fasten the mulch. Pay attention to the wind when the sun is full. One pit per plant, with a spacing of 3-4.5 meters. Because guava grows quickly, it needs enough space to facilitate its growth.
2. Live broadcast method: dig a pit with a diameter of 1 meter and a depth of 60cm, fill in the ratio of 1:1 of cooked manure and soil to 3CM from the ground surface, dig a pit with a depth of about 3-4CM, and sow for each pit. - 2 seeds, cover the seeds with soft soil, cover to 2cm above the soil surface, the spacing of seeds is 3 - 4.5 meters, and then use a thin bamboo rod to support a vaulted arch, buckle the film. This will not only ensure the lighting time and temperature, but also prevent the wind from blowing out at regular noontime. After the melon seedling grows 4-5 leaves, one of the weak seedlings will be grown. When the minimum temperature on the day stabilized at about 12 degrees above zero, the mulching film was removed.
Second, field management:
1. It is a good job to fix and prevent winds. In the spring, the northern winds are large, and the southern part is often a typhoon. Giant pumpkins have large leaves and are brittle and brittle. To prevent the melons from being blown by the wind, we must first use a small rake to loosen the soil under the vines and use iron wire to make them fall.†"U" shape, the melon vines fixed on the surface, until the melon rooting, the iron wire removed, it is best not to pressure vines to prevent corrosion; Second, in each melon with a bamboo rod and waste film Made of 60CM high windshield.
2, is to pick up the heart, pollinate and retain the main vine. To remove the first female flower and the tendrils before flowering, the side branch leaves 2-3 leaves and then picks up the heart; the main vine grows to about 10 meters. In early July, two kinds of flowers were formed, namely, male and female flowers. Male flowers appeared first, followed by female flowers. Attention should be paid to observing the appearance of female flowers. The female flowers are very recognisable, and each flower has a green, spherical stem at the base. These spherical stems are called ovaries. Usually the first female flower on each vine is removed, and the second or third female flower is retained. At this time, the vine has grown to 2.5-3 meters and a fresh male flower is picked before 8 o'clock in the morning. Remove the outer petals and shake the pollen on the stamens to the stigma of the female flower. All female flowers produced later will be removed.
3. The youngest fruit of the second female flower and the third female flower is left with the largest melon when it grows to the size of the tennis ball, and the other is removed in time;
4, sitting position should be flattened, slightly elevated, and set aside l square meters of space, at this stage we must trim the melon, when the melon vines grow to 200 leaves, cut off the top and side of the new branch, To ensure the growth of the squash on the guarana. When the melon spreads its roots at the petiole of each leaf, it cuts away the roots near the pumpkin, providing room for melons to grow, while removing the remaining female flowers, so that all the nutrients supply only one growth, when the pumpkin Will grow at a rate of about 9 kilograms per day. The third is to increase water and fertilizer management. Because the leaves of the melons are large and numerous, organic fertilizer is applied once every 5-7 days, with 50-70 kilograms per plant and 0.5 kilograms of nitrogen, phosphorus, and potassium respectively.
5. When topdressing, it is necessary to dilute the decomposed manure fertilizer from 1 meter away from the melon borer and add nitrogen, phosphorus and potassium compound fertilizer into the manure ditch. For plants with fast growing speed, large coarse leaves, and fast fruit swell, with the phase of the melon king, appointing someone to establish files, focus on protection, and special training. The fourth is to prevent pests and diseases in a timely manner. After entering July. The weather becomes hot and prone to aphids and powdery mildew. In order to ensure the quality of green foods, biological pesticides should be selected as much as possible once a week; powdery mildew should be treated with non-polluted pesticides, rust rust and green protection.
6, enter the rainy season, to do a good job around the drainage of melons to prevent rotten melon phenomenon. At the same time, rats' medicine was scattered around the pumpkins, and the rats destroyed the pumpkin's prevention work.
7, the environment is dry, easy to appear maggots and auto-powder disease, with trichlorfon prevention and control; in the event of wilt disease, with Qingbao Qing, Sterling control. Pay attention to the law, strengthen ventilation, pay attention to weeding, adequate watering, timely treatment of pests and diseases, no advance prevention of pests and diseases, ensure the healthy growth of melon seedlings.
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