Thick-skinned melons are cultivated in the eastern part of China. In particular, the cultivation area of ​​greenhouses has been continuously expanding. Cultivating disease-free strong seedlings of thick muskmelons is one of the key technologies for successful cultivation. This needs to start from sowing date, nursery bed, nutrient soil, seed treatment, seedling management and pest control.

1. Determine the appropriate sowing date The determination of the sowing date should be based on the conditions of the warm and light conditions of the cultivation environment (winter warm shed or arched round shed). The suitable sowing and seedling cultivation period for the winter warm greenhouses in all parts of Shandong Province is: the winter warming greenhouse in December. From early January to late January, arched greenhouses are available from early February to late February. Appropriate early sowing in the appropriate sowing date can ensure early harvest and listing and improve planting efficiency.

2. Prepare nursery facilities Because the muskmelon is a thermophilic crop, a higher temperature at the seedling stage ensures good emergence and growth. Therefore, in the cold season, seedlings need to use electric hotbed or fireway hotbed, hotbeds and hotbeds for nursery. It can be made in a well-insulated shed or reconstructed on the basis of impotence. The brewing and heating material made of brewing materials has a thickness of 30-40 cm to reach the suitable temperature; the electric heating hotline power requirement is 100-120 watts per square meter, and the firebed hotbed pays attention to the seedbeds. Uniform temperature at the site. In order to improve the warming effect of the hotbed, it is better to build the hotbed in a warm winter greenhouse with better insulation conditions, and it is better to warm the greenhouse.

The nutrient soil for nursery can be mixed with field soil (or garden soil) and decomposing circle fertilizer without pathogens in a ratio of 6:4, and add 1 kg of superphosphate and diammonium phosphate per cubic meter of culture soil. 1.5-2 kilograms, mixed with an appropriate amount of bactericide or insecticide, fully mixed, covered film for a period of time after the boring, the nursery seedlings into the seedlings nursery, nutritious soil seedlings nursery directly to the seedbed.

3. Do a good job in seed treatment Seed treatment of muskmelon mainly include warm soaking and medicinal treatment. The purpose is to promote seed water absorption and disinfect the seeds. Warm soup soaking method is to prepare 55 - 60 °C hot water, the seeds into the water, stirring constantly, keep 15-20 minutes, then the water temperature is reduced to about 30 °C, continue to soak for 3 hours. Pharmacy disinfection can be 0.2% - 0.3% potassium permanganate solution disinfection for 20 minutes, or use 50% carbendazim 500 - 600 times liquid soaking 15 minutes, or use 10% sodium phosphate solution soaking for 15 minutes. After the treatment of the medicament, pay attention to washing with clean water, wrap it in a wet cloth, germinate at 28-30°C, and sow the seed to white sowing.

4. Fine sowing Seed bed before the first soaked in water, then cover the film, and covered with a small arch above, and warm up in advance. The germination of muskmelon seed requires relatively high temperature, and it can only be planted when the soil temperature of seedbed is stable above 14-15°C, otherwise it is easy to appear bad phenomenon. Select sowing on sunny days, uncover small sheds and sow only one germinated seed on each nutrient or nutritious soil block, covering the soil 1-1.5 cm thick.

5. Strengthen seedling management sowing cover film insulation, the seedbed cover a small arch, daytime bed temperature to maintain 28 - 32 °C, 17 - 20 °C at night to promote emergence. After the emergence, it fell to 22-25°C during the day and 15-17°C at night, preventing the seedlings from forming high seedlings due to the high temperature. When the true leaves appeared, the daytime bed temperature was 25-28°C and the night temperature was 17-19°C. Seedling temperature directly affects sprouting and emergence, and should maintain 23-25 ​​°C. In the case of fertilizer deficiency in the seedbed, 0.2% - 0.3% potassium dihydrogen phosphate, or 0.2% - 0.4% urea can be sprayed to supplement the nutrients.

The seedling stage is prone to damping-off, spraying 75% chlorothalonil wettable powder 1000 times or 64% antivirus, 65% denisamide powder, 50% thiophanate methyl, 50% carbendazim powder 500 Double fluid can also be rooted. When maggots, tigers, etc. are infested, use 40% phoxim 50 times liquid to stir fry the wheat bran in a timely manner, and spread them on the seedbed and around, but do not leave too close to the seedlings.

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