Death causes and Control methods of sudden withering Cucumber in Winter and Spring

Cucumbers like temperature vegetables when planting winter and spring cucumbers in the greenhouse after entering the fruit period, the temperature requirements are more stringent, many farmers need to plant their own winter and spring cucumbers suddenly wither and die. What is the cause of this? How to prevent and cure it? Let's get to know it with the editor.

1. Cause of death of cucumber in winter and spring

When the weather turns fine after snow, the grass will be opened suddenly, at this time the temperature in the shed is relatively low, and the area of cucumber leaves is relatively large, which will make the temperature rise rapidly, leaf transpiration will intensify, and will cause physiological water loss and withering of melon seedlings. In addition, after flood irrigation, it may also lead to plant wilt. after irrigation, the soil water content is higher and the permeability is poor. under the condition of hypoxia, the soil will produce toxic substances, resulting in root poisoning or hypoxia suffocation and atrophy.

II. Prevention and control methods

1. After the seedlings return to normal growth, all the grass can be pulled up during the day, even on cloudy days, so that the seedlings can see more light, but the temperature is relatively low at night. It is still necessary to cover two layers of protective film and do a good job of heat preservation to avoid secondary frostbite.

2. timely watering, fertilization and spraying after sunny days to promote seedling growth and control diseases and insect pests. 15-20 days before cucumber planting, the soil moisture is fully watered. If the soil layer is too deep, then the border surface needs to be leveled again after watering, so that the soil can reach the standards of depth, transparency, fineness and flatness. Drip irrigation is suitable for watering to avoid flooding and keep the soil with good air permeability.

3. In the seedling stage, it is necessary to strengthen management, cultivate strong seedlings, and control diseases and insect pests in time.

4. It is necessary to strengthen the warmth and lighting of the shed, pay attention to heat preservation before the arrival of the cold current, and at the same time pay attention to not watering, so as to avoid the decrease of soil temperature.

5. Rational fertilization, more rotten organic fertilizer and extra-root fertilization can promote plant growth and health by applying foliar fertilizers such as potassium dihydrogen phosphate, Pushibao and plant AAA in Puning city. When the weather is fine after snow, the grass should be uncovered in time, and the leaves should be sprayed with about 20 ℃ of warm water to remove the old leaves in time and reduce transpiration.

The above is the introduction of the death causes and control methods of sudden withering cucumber in winter and spring. I hope it can help you. If you want to know more about it, please pay attention to us.