In the early autumn, we want to improve the quality and yield of vegetables. In addition to adopting shade nets to cool down and increase ventilation, we can also regulate the growth of vegetables by watering and cooling. The water lost by evaporation at high temperature is supplemented by watering to meet the water demand of the vegetables and to reduce the temperature in the shed. Watering time It is best to start watering in the morning, and the sun will be strong after 9-10 o'clock. As the temperature rises, the evaporation of water will take away the heat in the field, so that the temperature in the shed is 3-5 ° C lower than the exposed ground. The watering time should be poured once every 3-4 days, and the ridges should be poured (the rows and rows are alternately poured), and the watering amount should not be too large. The principle is to increase the number of watering and reduce the amount of watering. Timely topdressing The type and quantity of top dressing are determined according to the amount of vegetables grown and the amount of product harvested. Fruits and vegetables should be topdressed with nitrogen, low-phosphorus and high-potassium water-soluble fertilizers at the peak of harvesting. 15-20 kg per mu, while watering the joints and tops, Take a watering once, once a fertilizer, a small amount of multiple methods. In addition, do not pour rain into the shed when it rains heavily. If it is a large arch shed with the shed film removed, it should be drained in time after the rain, and the drainage ditch should be dug in front of the shed or on the side of the shed. Vegetables grow like water, especially at high temperatures. If you suddenly get a thunderstorm (commonly known as hot rain), besides timely draining, you must use the well water after the hot rain. This is because the well water is relatively cool, and the surface water can be reduced by the well water, and the floor panel knot is reduced. This is the so-called “squatting gardenâ€. It is especially important for melons and solanaceous vegetables, followed by onion. For onions and leeks, it is more likely to cause dead trees after the disaster, commonly known as "chemical seedlings." That is to say, after heavy rain, it is necessary to drain in time, and to carry out the pouring of the garden under conditions, and to discharge the rainwater without any conditions. For plots that do not have drainage conditions, digging a pit on one side of the ground as a temporary drainage has a certain effect on alleviating the damage. Disclaimer: Some articles on this website are transferred from the Internet. If legal rights of third parties are involved, please inform this website. phone Xi'an complex bio-tech CO.,LTD. , https://www.complexpowder.com