During the summer and autumn, the temperature is high and the rain is high. At this time, the planting of zucchini is vulnerable to pests, viral diseases and powdery mildew. But during this time, the zucchini is listed on the market and the price is high. In order to enable farmers' friends to obtain higher planting benefits, the summer and autumn festival summer squash planting techniques are shared as follows: First, the variety selection In the early summer, the temperature of the summer squash is high, and the occurrence of aphids and whitefly is easy to cause viral disease and silver leaf disease. Therefore, it is very important to choose the variety. It is recommended to use the products of Henan Shengrun Seed Industry, such as Shengrun Xiaqiu Wang, Shengrun Heat Resistant King, Shengrun 806, Shengrun Green Pelican, Dutch Ansha SQ210, etc. These varieties have early maturity, heat resistance, virus resistance and resistance. The ability of powdery mildew is strong. Under high temperature, the melon color is not easy to turn white, the color of the melon is green, the melon is long, the commodity is good, the plant type is compact, and the yield is high, but at the same time, it is necessary to strengthen the prevention and treatment of viral diseases. Second, cultivate age-appropriate seedlings The summer squash in autumn and autumn in Henan Province is generally seeded or broadcast live around August 15 (in other areas according to the temperature of the corresponding advance or delay). During the nursery period, the seedbed should be shaded and rainproof, and the aphids and whiteflies should be prevented in advance to reduce the incidence of viral diseases. Autumn zucchini is suitable for 10-12 days of seedling age, and 2-3 pieces of true leaves can be colonized when the seedlings are unfolded. When the seedling age is too large, it is easy to damage the root, which is not conducive to slow seedlings and easily lead to viral diseases. If the planting area is large, the dry seed can be broadcasted by the method of 1, 2, 1, 2. When the seed is broadcast, the seed should be placed flat to prevent the cap from being unearthed. The distance between the grain and the grain should be kept about 3 cm to prepare the seedling to replenish the seedling. Watering in time after sowing to ensure the emergence of seedlings. Third, soil preparation and fertilization For the plots of non-melon crops before and after planting, the land preparation should be carried out about 1 week before planting. In order to obtain high yield of zucchini, it is necessary to apply 5000 kg of high-quality decomposed farmyard manure and 30 kg of NPK three-element compound fertilizer per mu. The top layer of the soil and the fertilizer are mixed thoroughly (the ditch is optimally applied), and the ridges with a width of 40 cm and a height of 15 cm are formed at a line spacing of 80-100 cm after the flat block, and the black film is covered with grass to prevent grass damage and lower the ground temperature. Then watering, this water must be poured with water. Before planting, it is necessary to spray fungicides, insecticides, and foliar fertilizers to spray seedlings to prevent seedling pests and diseases. Conditional sheds can be used to cultivate summer and summer squash, and silver-gray shade nets are installed to properly shade. Compared with the sunshade net, the indoor strong light is reduced by 30% to 40%, and the greenhouse temperature is lowered by 4 to 5 °C. It can also avoid pests such as mites, whitefly, and scorpion, and prevent viral diseases. Anti-wind effect. The so-called proper shading means not to use the black shade net to be too heavy, but to use a silver-gray shade net with a shading rate of about 40% and avoiding mites and white powder. The installation position of the sunshade net, the large arch shed extending from the north to the south should be installed at the top of the shed at a height of 4 to 5 meters, and the other sides should not be installed. The solar greenhouse, which runs north-facing in the east and west, should start from the sky window at the top of the front slope and be installed to the north of the front window. As for the front window, a 40-mesh insect net should be installed. The application time of the sunshade net should be about 45 days from "Summer Solstice" to "Liuqiu", and the sunshade period should not be too long. Some vegetable farmers do not install a sunshade net and spray or pour the mud on the outer surface of the shed film, which can also significantly reduce the light transmittance, anti-burning and cooling effect of the shed film. Fourth, colonization When planting, you must choose sunny afternoon (see the weather forecast when planting, choose 2-3 sunny days after planting), choose 2-3 pieces of true leaf stalks, thick, short internodes, short petiole, leaves Strong green and thick, compact plant type, strong roots with developed roots, plant spacing 50cm, planting 1200-1300 acres. The double-row cultivation adopts the triangular insertion and colonization method, so that the two rows of plants are staggered from each other, and the ventilation and light transmission ability is improved to reduce the occurrence of diseases. When planting, be sure to use soil to bury the membrane mouth around the seedlings to prevent hot air from escaping from the film, causing the seedlings to be burnt or even killed. V. Field management Before planting to the knot, it is mainly based on water control, fertilizer control, root promotion, hairpinness and prevention. About 1 week after planting, according to the actual growth situation, you can pour a slow seedling water, and apply about 10kg of compound fertilizer per acre with water to promote slow seedlings and hair growth, and lay a good foundation for multi-growed melons and knotted melons. This time, you must pour small water. Don't let the water be too long to avoid the loss of flowers. According to the situation of the seedlings, if the occurrence of the length, you can spray 50% chlormequat 600 times to prevent the length. After watering and fertilizing, the soil should be ploughed in time to improve soil permeability. In the summer and autumn, the temperature of the summer squash is high, and the temperature difference between day and night is small. For example, if the natural growth occurs, the female flowers will open late and the melons will be thin. In order to promote flower bud differentiation, early melons and many melons, the three leaves can be slowed down. A 200 ppm ethephon solution (2 kg of 40% ethephon water per ml) was sprayed in a single heart. The temperature is higher in summer and autumn, and the temperature difference between day and night is not conducive to insect propagation pollination. At this time, it is necessary to assist artificial pollination or spraying. Entering the temperature in October is appropriate, and the rate of natural sitting is increased. Use the fruit essence to set the concentration to 1500 times of water, that is, add 15 ml of sitting sugar to 15 kg of clear water (you can add red advertising color to prevent repeated spraying), spray once every 7-10 days, in the third of zucchini The female flower is open before the leaf spray, the sprayer uses a small hole spray, the air pressure should be enough to atomize, the spray head moves evenly over half a meter above the plant, only the front of the leaf can be sprayed, the bottom of the leaf is not sprayed, and the sprayed growth point is strictly prohibited. Young melon. You can also use a brush, sponge ball, rubber head to dip the liquid to promote the melon. If it is found that the zucchini sprayed on the melon is not flowering, the melon has grown, which means that the dosage should be reduced to reduce the dosage and increase the number of days between sprays. After the plant enters the melon period, the water and fertilizer management should be strengthened: when 2/3 of the root melon is sitting, the melon water is poured, and 10 kg of urea per acre is applied. The weak growth of the melon can be watered in advance to ensure plant growth and fruit enlargement. The nutrients needed. Later, according to the growth of the plant and the weather conditions, water is poured every 5-7 days, and every time the water is poured 2 times, the water is chased once, that is, once every time, the water is chased once. Topdressing is applied to each manure of 500 kg per mu or 10-15 kg of urea or 15-20 kg of compound fertilizer. If the plant is weak, it is necessary to remove the first young melon in time to avoid the phenomenon of falling, which can promote the late morning market and prolong the result period to prevent premature aging and increase production. After the plants grow up, they should always cut off the old leaves and diseased leaves that have been aging and yellowing in order to improve the ventilation and light transmission conditions. At the same time, remove the melon, deformed melon and diseased melon in time to prevent the inefficient consumption of nutrients and the spread of disease. In this period, because of the high temperature and rain, the pests and diseases are more serious, so we must do a good job in prevention and treatment. When there is no disease, take a drug to prevent viral diseases, powdery mildew, fungal diseases and bacterial diseases every 7-10 days; Play every 5-7 days. For fungal and bacterial diseases, it is necessary to kill 3000 before and after raining or watering, and agricultural streptomycin should be controlled. Sixth, harvest It is necessary to harvest the zucchini in time to harvest the tender melon. It must be harvested in time, especially the first melon. It should be harvested as early as possible according to the market consumption habits to avoid falling. The first melon can be harvested when the weight is about 0.25 kg. After that, each melon should be harvested according to the market demand habits in time to prevent the melon from growing too long and falling, thus affecting the later production. The above is the planting technology of summer squash in the summer and autumn season, the content is for reference only. If you want to know more about agricultural technology, please pay attention to the Hui Nong School! Rabies vaccine contains rabies virus antigens and is used to stimulate active immunity to rabies infection.Rabies is a deadly virus spread to people from the saliva of infected animals. 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