The spring temperature gradually rises, and early spring cucumbers are prone to leggy, resulting in a small number of cucumber female flowers, which seriously affect the cucumber yield and quality. To do this, we must do a good job of preventing cucumbers from growing in early spring.

First, control the night temperature of the greenhouse. In spring, the temperature rises quickly. If the tuyere is closed prematurely and the grass cover is covered prematurely, it is easy to have high night temperatures, increased respiration, excessive nutrient consumption, and causing cucumbers to grow long. Therefore, according to the insulation condition of the greenhouse, adjust the time for the air outlet and the grasshopper. Sunny days can be reduced to about 18 °C in the greenhouse temperature to close the tuyere, down to about 16 °C to lay straw, the cucumber night temperature is controlled at 13-15 °C.

Second, reasonable watering and fertilizing. After the spring temperature rises, the cucumber grows faster. In order to meet the needs of plant growth, some vegetable farmers blindly increase the amount of watering and fertilizing, resulting in cucumbers being long. Therefore, in order to prevent the cucumbers from growing in length and nurturing strong broilers, it is necessary to apply proper watering and fertilization. Avoid watering too much and use too much N fertilizer.

Third, timely and appropriate amount of fruit. For the spring cucumber, if the plants are long, they can leave the root melon as early as possible to promote the transformation from vegetative growth to reproductive growth, and then regulate the growth of the plant. However, root melons must be picked early in time to avoid falling into oblivion and affect the fruit set in the later period.

Fourth, spraying plant growth regulators. Plants can be sprayed with 750-1000 times of auxin and 1500-2000 times of chlormethorine after they have grown into prolonged growth. However, when using growth inhibitors in spring, it is necessary not only to pay attention to the amount of use, but also to pay attention to the weather, due to the changeable weather in spring. After the temperature rises, there may be "cold weather". After the application of growth inhibitors, once the temperature drops, both the low temperature and the growth inhibitors can easily cause excessive control of the vegetables. Therefore, the use of plant growth inhibitors in the spring must be cautious. Attention should be paid to weather forecasts when using them, and they should be used according to weather conditions.

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