1, choose a good variety
If the bitter fruit is left as a melon seed, the fruit produced by the next generation will still have a bitter taste. Therefore, when the cucumber is about to mature, it is necessary to take part of the epidermis to taste it, and choose the one without bitterness. In addition, the dark green color of cucumber varieties of bitter pigment content is relatively high, therefore, we should try to avoid the selection of leaf color dark green varieties of multi-selection pale leaf species reserved.
2, a reasonable fertilization
Less nitrogenous nitrogen fertilizer promotes dark green color and should be applied less. Can be cooked more organic fertilizer and phosphorus and potassium fertilizers. Do not mix chicken manure when applying manure, because of the high nitrogen content of chicken manure, easy to make cucumber taste bitter.
Fertilization should be a small number of times, the concentration should be light should not be concentrated. The dynamics of absorption of various nutrient elements are synchronized with the growth of plant growth.
3, control the temperature
With the plastic greenhouse insulation cultivation, when the local temperature is lower than 13°C for a long time, the roots of cucumbers are poorly developed, the ability to absorb fertilizers and water is weakened, roots have more bitterins, and bitter melons are easily produced. When the odor in the shed is higher than 30°C for a long time, less nutrients are accumulated and accumulated, which may also lead to the accumulation of bittersin in the melon strips.
4, reasonable irrigation
Cucumber root system is shallow in soil, and it cannot absorb deep water. Under conditions of high temperature and low soil moisture, it is easy for plants to undergo physiological drought and produce bitter melon. In high-temperature weather, reasonable irrigation is used to regulate the humidity of the microclimate in the shed, to keep enough moisture in the soil, and to achieve a small number of times, the watering should be carried out in the sunny morning.
5, improve lighting
Increase light between the plants and improve ventilation. It will be carried out after 30 centimeters in length, and will be tied once every 3-4 knots. When the Lord is full, he will pick his heart.
6. Smoke in the shed
Seedlings of 2 to 3 true leaves, light smoke in the shed, confined 2 to 3 days and nights, can increase the number of female flowers, more knots strong melon, reduce bitterness accumulation.
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