Watering and humidifying but hurting the root? Planting melons and fruits in summer, common watering mistakes in gardening, don't do it
When growing melon, fruit and vegetables, we often encounter all kinds of problems. Some farmers said that when they saw the fruits wilted, they thought they were short of water and watered them once. They wanted to solve the problem, but they didn't expect the whole plant to grow worse and worse, and finally withered. Why did farmers water and humidify, but finally hurt the plants?
In summer, the temperature in the shed rises, and by noon the temperature reaches about 34 ℃. In addition, the light is strong, and the water absorption and transpiration of vegetables are large. Plant wilting, which is a normal phenomenon, can be properly shaded and cooled to alleviate. At the same time, if you want to grow well, you have to keep replenishing water.
When growing vegetables in the soil, the plants often wilted under the high temperature. Farmers worried about the occurrence of dead trees after seeing them, and began to water them, but finally caused the plants to wither. Mainly because of the high temperature stage, the soil temperature is also very high. The water temperature is about ten degrees lower than the soil temperature, and after watering, it seeps into the soil quickly.
The temperature around the root decreased, the pores of the root decreased, and the water absorption capacity also decreased. Repeated every day, root water absorption is lower than evaporation, and the plants eventually wither and die.
When is the best time of day to water? Growing melon, fruit and vegetables in the soil, farmers are constantly suffering from this problem. In summer, to avoid the high temperature period, try to choose five or six o'clock in the morning to start watering, soil temperature and well water temperature is not much different, reduce root damage.
Some farmers say that soilless cultivation of melon and fruit vegetables is different from soil planting. Will there be such a problem in summer watering?
Using matrix instead of soil planting, good air permeability, may have to water four or five times a day, some to water seven or eight times, in order to maintain the humidity of the substrate, so that the root system can continuously absorb water. When the substrate is planted, it is generally rare that the plants wither due to poor root system. On the one hand, the permeability of the matrix is good, the air can enter quickly after watering, and the temperature around the root changes little, so it will not cause damage to the root system.
On the other hand, soil planting and watering often uses micro-spraying method, the water flow rate is large and fast, and it is easy to stimulate the root system. Substrate cultivation of melon and fruit vegetables, using drip irrigation method, many times in a day, but each time the amount of water is less, the substrate will stop pouring through. Therefore, when the substrate is cultivated, it is generally dry and water should be watered. When the humidity is less than 60% or the hand pinch matrix feels low, it will be watered in time.
Perhaps many newly planted farmers did not expect that vegetables wilted in summer, and the problem was watering. This also reminds many farmers that if they want to grow well and produce high yields, they are not the only ones who use fertilizer and medicine. In the face of high temperature period, how to adjust the management? That's the key point.