The growth of cucumber is inseparable from sufficient light. The daily illumination time is no less than 8 hours, which can store a lot of nutrients for the plant, and help the seedling to become thick. If you can't reach this mark, you can use fill light to provide illumination.
Although cucumber can grow under high temperature, low temperature can inhibit its respiration and store nutrients effectively. During the day, the temperature can be controlled at about 32 ℃, but at night, it should be reduced to 15-18 ℃, and then maintained at 10-12 ℃ in the middle of the night, which is conducive to its expansion.
The suitable ground temperature can make the root system of cucumber more developed, which is beneficial to the absorption of water and nutrients, and also can make the yellow melon seedling coarser. The soil temperature is suitable to be about 18-24 ℃, below 8 ℃, the root system will no longer grow. And higher than 32 ℃ can also inhibit the development of root system.
If the soil nutrient is not enough, the yellow melon seedling can not grow thick. Timely fertilization and nutrition are needed. Available nitrogen, phosphorus and potassium compound fertilizer, irrigated in the root. Or use potassium dihydrogen phosphate as foliar fertilizer and spray it on the leaves of plants. Once every 7-10 days, two or three times can improve the situation.