What happens when dragon fruit appears?
Recently, dragon fruit planted by Lu Dianfan, a contractor of the Fangcun branch of the Jinsui Company in Longan County, Guangxi Province, has emerged. “Help the farmer ask†to go to Zhang Xuejuan, a 2014 graduate student of the Jinsui Science and Technology Institute of China Agricultural University. She gave a reason analysis and solution to the problem after field investigation: Root pits of pitaya plants have reduced fibrous roots and undeveloped roots. The damaged parts initially presented yellowish-brown spots. The area of ​​the affected area gradually expanded, and the color deepened reddish-brown and even rotted. The roots eventually spawned and spawned in the roots. Because the roots can not normally absorb nutrients, the aboveground parts of the plants grow slowly and even stop growing, and the branches gradually become thin, yellow, and dry. Roots like to have a lot of organic matter, so when organic fertilizers are applied too much, they are prone to eruption. When the winter dragon organic fertilizer was applied to the dragon fruit base and the budding fertilizer was not mixed with the soil, the organic fertilizer was not fully decomposed, and a few root pod individuals remained in the organic fertilizer. The breeding of root larvae is related to temperature, with high temperatures and rapid reproduction. The temperature in Nanning, Guangxi, is around 30°C in May, which is suitable for the propagation of the root carp. If there is a carp, the breeding speed is very fast. Large amounts of rainfall or flooding floods cause adverse events. The dragon fruit base of the company is using water and fertilizer integration equipment, moderate soil moisture content, conducive to the occurrence of root defects. After test verification, we have found out a comprehensive solution: Field testing. Rootworms are small in size, fast in reproduction, and strong in resistance, and they are difficult to eradicate once they occur. It is not easy to detect at low density, and even after a large number of occurrences and symptoms of damage, the root system has even been taken away. Therefore, if dragonfruit plants are found to be slow growing and no new lateral buds grow for a long period of time, they must be timely rooted to see if they are rooted. Soil improvement. For acid soils, lime or acidic soil conditioners are used to improve soil pH and neutralise soil pH. The input of organic fertilizer can be appropriately reduced, and the organic fertilizer must be thoroughly decomposed and mixed with the soil when applied. Chemical control. You can use acaricidal drugs, such as avidin (0.2% avermectin, 4.8% gargle) diluted 1000 to 1500 times or 40% chlorpyrifos diluted 1000 times, etc., every 10 to 15 days Irrigation, even irrigation 2 to 3 times. Blackout greenhouse ,Light dep greenhouse ,Auto light deprivation greenhouse,Blackout green house,film greenhouse JIANGSU SKYPLAN GREENHOUSE TECHNOLOGY CO.,LTD , https://www.alibabagreenhouse.com