According to a survey conducted by reporters, this type of condition mostly occurs when bitter gourd enters the squash stage, and plants with poor stem vine stalk growth are susceptible to disease and yellow leaves are serious. In addition, the continuous cropping plots are severe and the management of fertilizers and water is improper. In bad weather, yellow leaves of bitter gourd appear to be heavier. According to the analysis of the reporter, the yellow leaf disease reflected by the farmers should belong to a kind of physiological yellow leaf disease. The reason is that, on the one hand, bitter gourd enters the period of squashing, the development of fruits and melons needs to “race for†a lot of nutrients, and these nutrients come from the accumulation of photosynthesis of stems and leaves, or from the absorption of roots. If we encounter persistent weather such as rainy days, stems and leaves have poor photosynthesis, less accumulated nutrients, and stem and leaf nutrition “grabbed†by melon development, making the synthesis of chlorophyll in the leaves obstructed and the yellowishness of the leaves. On the other hand, due to inappropriate land and water, the roots of the bitter gourd were injured, which hindered the absorption and utilization of effective nutrients (such as iron, zinc, and magnesium), resulting in the emergence of fertilizer-losing fat in the bitter gourd stalks. phenomenon. At the moment, the bitter gourd in the greenhouse has entered the period of squashing, and the temperature has dropped. The reporter believes that the prevention of bitter gourd “yellow leaf disease†was at that time. The reporter suggested: Strengthen water and fertilizer, maintain the root system, cultivate strong vines, delay leaf senescence, and increase the growth of bitter gourd stem vines. This is the key to preventing bitter gourd yellow leaf disease. First, with the water flushing Shiwodi hair root force, a barrel per acre, or a single irrigation root 800 times, 5-7 days 1 to improve the root activity, promote new roots, improve the resistance of balsam pear vine ability. In addition, while raising the roots, it is advisable to alternately fertilize high-nitrogen and high-potassium ferdiosporin (15:5:40) water-soluble fertilizer, 8-10 kilograms of mu, and strong vines swell. The second is the foliar spray of leaf fertilizer containing iron and zinc to enhance the photosynthetic capacity of the leaves, delaying the senescence of the leaves and avoiding the occurrence of yellow leaves. Plier Sleeve,Silicone Sleeve,Medical Silicone Sleeve,Medical Device Protective Set GUANGDONG JIANGMEN RONGHAI MEDICAL TECHNOLOGY CO.,LTD , https://www.kimaomedical.com
Prevention of bitter gourd yellow leaf fertilizer management
Recently, when interviewed by reporters at Panjia Village, Sunjiaji Street, Shouguang City, a number of farmers reported that the bitter gourds that were planted in their own greenhouses entered the period of squashing, and the yellowish stem leaves appeared to varying degrees. The local people were commonly called "Yellow leaf disease," the effects of spraying all kinds of pesticides are not ideal, and yellow leaves will be heavier, affecting the yield.