Consultation: Why do some cucumbers grown in greenhouses have bitter taste?
Answer: The formation of bitter melon is related to variety and environmental conditions. Bitter melon is a bitter taste due to the production of a substance called momordicin in the fruit. Some varieties are prone to bitter melon, which is determined by genetic factors. However, the environmental impact of the outside world can also lead to the formation of bittersin within the melon strips, causing the melon strips to become bitter. These external conditions are mainly: 1. Excessive use of nitrogen fertilizer or phosphorus deficiency, potassium fertilizer, especially nitrogen overuse suddenly, will promote the formation of bittersin; 2. The ground temperature is low. In winter, the temperature of the greenhouse is poor at low temperature, especially when the ground temperature is lower than 13°C or when the large water and cold water are irrigated, resulting in a sudden drop in the ground temperature, resulting in a decrease in cell permeability. Root nutrients and water absorption are hindered, and bitter melons may also appear. 3. If the temperature is higher than 30°C for a long time, the assimilation ability of plants will be weakened, and the loss of alienation will lead to malnutrition, and bitter melons will also appear. 4. The spring temperature rises quickly, and the ground temperature rises slowly and the water in the plant is imbalanced, which can also cause bitter taste.
Control measures: 1. Try to use varieties that do not produce bitter melons. 2. Do a good job of greenhouse temperature, humidity, light and moisture management. The nighttime temperature should not be too high (after the spring temperature rises), the temperature in the middle of the night is preferably controlled at about 17°C, and the temperature in the latter half of the night is controlled at about 11°C~13°C to reduce the respiratory consumption; the dark winter season has a short illumination time. Try to increase the light, and pay attention to insulation. Shed room temperature should be controlled during the day 25 °C ~ 28 °C, 30 °C can not be a long time; adhere to the dark sunny morning membrane ditch irrigation, especially cucumber should be done shallow ground irrigation, to prevent the soil too dry and wet. 3. The best fertilization of cucumber is to use formula fertilization and organic fertilizer. The ratio of N, P and K should be applied in a ratio of 5:2:6.
We are manufacturer of Calcium Alginate Dressing in China, if you want to buy Calcium Alginate Wound Dressing,Calcium Alginate Silver Dressing,Calcium Alginate For Wounds please contact us.
Calcium Alginate Dressing,Calcium Alginate Wound Dressing,Calcium Alginate Silver Dressing,Calcium Alginate For Wounds
Henan Maidingkang Medical Technology Co.,Ltd , https://www.mdkmedical.com