Summer greenhouse planting management: 4 points for rational watering

First, watering time is good

Watering time in the summer should be selected in the morning or evening, which can not only achieve the cooling effect, but also not cause damage to the vegetable roots. In particular, watering in the evening can effectively reduce the night temperature, increase the temperature difference between day and night, and reduce the night's respiratory consumption, which is conducive to the accumulation of nutrients. Remember not to water at noon, to avoid the "fried" root phenomenon of vegetable roots in response to cold water stimulation, thus affecting the normal growth of vegetables.

Second, diligently poured and interleaved

That is to say, planting lines and operating lines are used, and small water is interleaved. This ensures the positive growth of vegetables and allows the greenhouses to maintain a certain humidity, so as to avoid the occurrence of viral diseases and bacterial diseases. The number of watering should be flexibly grasped according to the growing conditions of the vegetables, the dry and wet conditions of the soil, and weather changes. For example, the day before the continuous abnormal high-temperature weather can be poured into the water one day before and it can be used as a response.

Third, avoid water after the water control

Some vegetable farmers have excessive water control for a long period of time due to concerns such as prolonged plant growth. At this time, watering should be done by pouring a small amount of water first, so that after 3-5 days of adaptation, the amount of water is increased. Progressively. After the long drought, letting him “satisfy” once is not correct. It is very vulnerable to rooting, resulting in weak roots, causing early sadness, and providing favorable conditions for the occurrence of various root diseases.

Fourth, spray water

Spray water on the plants at about 10 o'clock in the morning on sunny days (focus on the upper part of the plants) to prevent "dryness". This not only adds moisture to the leaves but also reduces the temperature of the shed. Especially for those plants that entered the late growth stage and their root absorption capacity was weakened, spraying fresh water had a good effect on relieving leaf and yellow leaves and other physiological problems.


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