1, fertilizer and water management.

Apply early fertilizer skillfully and then long melon fertilizer. Pumpkin needs a large amount of fertilizer and its root system has strong absorption capacity. Its growth habit is that it is easy to grow in the early stage, and it is appropriate to topdressing 1 time after fruiting and creeping 1 time after fruiting. In the early stage, it is necessary to properly control fertilizer and water (especially nitrogen fertilizer) to avoid excessive growth and late flowering and fruiting.

After surviving the field planting, 500 kg of 10% human excrement water was applied per mu. When there are 5-6 real leaves and the vines are still upright and not lodging, apply vine fertilizer 1 time, apply 500-750kg human excrement water per mu, and sprinkle 50kg plant ash between rows to promote the growth of stems and vines. When female flowers appear, if the tender shoots grow upward and the leaves are green, it means that the growth is too strong, and it is not appropriate to topdressing again to prevent white growth or falling flowers and fruits.

When the fruit of the first 1 female flower is as big as a bowl, the second melon fertilizer should be applied, and 1500 ~ 2000kg of human manure should be applied per mu to promote the growth of young melons. After the first and second crops are harvested, in summer, in addition to irrigation, the third crop of excellent melon fertilizer should be applied, and l500~2500 kg of concentrated human excrement water or 20 ~ 25 kg of chemical fertilizer should be used per mu to promote the growth of stems and vines, and then the melons should be covered. When melons are harvested before and after summer heat, apply fertilizer for the fourth time to make them bear more autumn melons and extend the supply period. Note: there should be ditches in the site, and no water can be accumulated. ?

2. intertillage and cultivate soil.

Pumpkins are often intercropped with overwintering crops or short-term vegetables. After sowing 5-6 leaves or harvesting the previous crop, intertillage and soil drainage should be carried out along the melon net in time, and rhizosphere soil cultivation should be 1-2 times. ?

3. Plant regulation. Including scaffolding, pruning, coring, etc. Take early-maturing pumpkin as the main vine, trim and remove the heart in time, reduce nutrient consumption and promote early fruiting.

4. Temperature and light management.

Within 1 week after planting, the small arch shed should be sealed to promote heat preservation and moisture retention. After the seedlings survive, they should gradually open up and try to increase the light. In rainy days, film ventilation should also be properly opened. The temperature in the greenhouse is mainly 25 ~ 30℃ during the day and 15℃ at night. With the increase of temperature, for small arch shed cultivation, both ends should be ventilated when cooling down, and if the frame is too long, attention should be paid to ventilation in the middle. Close the shed at 3pm, so that it can be maintained until Grain Rain, and the small arch shed can be demolished in mid-April.

5. Raise flowers and fruits.

Pumpkins are dioecious and pollinated by insects. In case of low temperature and rainy weather, insufficient illumination and less insect activity will affect pollination and cause flowering, or improper fertilization, especially excessive nitrogen fertilizer, will also cause flowering and fruit drop.

Step 6 harvest. In order to ensure the high quality and high yield of pumpkin, it is necessary to pick the root melon as soon as possible, and generally it is better to pick it 17 ~ 20 days after pollination. Before entering the rainy season, in order to prevent powdery mildew, carbendazim, chlorothalonil, thiophanate-methyl, mancozeb and tebuconazole can be sprayed to prevent diseases.