In summer, disasters such as thunderstorms, breezes, and hail occur frequently, and measures should be taken to protect the ground in advance, and the loss will be reduced. Prevent rainwater from entering the shed Every year, a large number of farming greenhouses are damaged due to improper protection and impregnated by rainwater, especially the old sheds for many years, often collapsed due to rainwater pouring into the shed. Therefore, we must take steps to prevent rain. After the hail enters the shed, the splashed sludge will hide the seedlings and damage the vegetables. In addition to the real-time rinsing of the sludge on the leaves, it should be sprayed once and then to avoid the invasion of pathogens from the plant wounds, and at the same time apply root fertilizer In order to promote the growth of vegetables in the agricultural greenhouses as soon as possible. Vegetable Greenhouse manufacturer shares three specific situations for you.
(1) Heavy rain
After sowing, it was hit by heavy rain, and the seeds were scattered to the bottom of the ditch or exposed to the soil surface, resulting in a lack of seedlings. After emergence, the topsoil was washed by heavy rain, which exposed the root system. After the sun turned sunny, the seedlings withered and died. All kinds of vegetable seedlings were damaged by the rainstorm machinery, the growth momentum decreased, the output decreased, and the market volume decreased. Therefore, to prevent the rainstorm in the greenhouse, the following three points should be noted:
1. Deep plowing to improve the soil and applying more organic fertilizers can improve the physical properties of the soil, increase the soil seepage capacity, and have a certain effect on reducing the damage of rain and waterlogging; Waterlogged areas, deep trenches and high-border farming, planting trees for afforestation to maintain soil and water, trenches and ditches in the field should be connected with ditches, and irrigation and drainage are free; 3. When rainy weather, trenches or mechanical drainage should be promptly drained; Remove the yellow leaves and straighten the plants. After the soil is slightly dry, plowing the soil in time to apply fertilizer.
(2) Hot thunderstorm
In summer, due to the strong solar radiation and the rapid increase in the temperature of the ground, a large amount of humid and hot air rises violently, often producing strong thunderstorms. This is called hot thunderstorms. It occurs more often in the afternoon, and the more sultry and windless the weather is, the easier it is. Hot thunderstorms often cause greater harm, and have a greater impact on cucumbers, eggplants, and leafy vegetables, especially young seedlings. The Ji solution is to water the greenhouse in time after the rain, and it is better to use sprinkler irrigation. Because after watering, the farming layer can be fully saturated, water can be brought into oxygen, and toxic gas can be discharged, root breathing will be improved, and the water absorption function will be increased. After pouring water, the temperature can also be reduced, which is beneficial to the growth of vegetables and is not conducive to the propagation of pathogens. Watering can also wash away the sludge splashed on the leaf surface, which is beneficial to the photosynthesis.
(3) High temperature
High temperature and heat damage have an adverse effect on the growth and production of vegetables and the formation of yield, which is the basic reason for the formation of "autumn light" in vegetable supply. Greenhouses should be protected from high greenhouses. First, heat-resistant vegetables are grown in summer, such as winter gourd, loofah, cowpea, and water spinach. Second, they are watered in time to cool down by evaporation and heat dissipation. It is best to use sprinkler irrigation in high temperature and dry seasons, but avoid watering at high temperatures around noon, because the sudden temperature drop will cause physiological obstacles to vegetables; the third is to adopt shade cultivation. In summer, the greenhouse can be covered with shade nets to protect the vegetables from solar radiation, which is beneficial to cool summer vegetables. Fourth, the use of growth regulators to control the fall of flowers can prevent tomatoes and eggplants from falling due to high temperatures.