In the process of cultivation of leeks, they often suffer from serious diseases and diseases, which not only result in serious reduction of production, but also affect quality and cause large economic losses to farmers. First, the symptoms After the leaves became infected, they were initially dark green and immersed in water. The diseased part of the disease was significantly contracted after dehydration, and the leaves drooped. When the humidity was high, the diseased part produced sparse white mold. The pseudo-stem suffers from immersion in light brown rot, and the leaf sheath is easily detached. When the humidity is high, white sparse moldy layer grows on it. The bulbs were damaged, the root disk was water-soaked, brownish to dark brown rotted, and the internal light bulbs of the longitudinal bulbs were pale brown, which affected the nutrient storage of the plants, the growth was inhibited, and the new leaves were delicate. The roots suffer, brownish rot, root hairs are reduced, new roots are rarely issued, and the growth is significantly weakened. Second, control methods 1. Change crops to avoid planting for consecutive years. 2. Strengthen field management. On the basis of applying basic fertilizer (organic fertilizer), pay attention to the combination of nitrogen, phosphorus and potassium. Dismembered bodies are the main source of diseases that spread leeks. Therefore, when the leaves are sick and dry, they should be removed in time and brought out of the house to reduce the source of bacteria. During the growth process of leeks, such as indoor humidity is too high, the temperature is too high, optional sunny windless weather, set off at noon on the leeward plastic film ventilation for about 3 hours to reduce the indoor temperature and humidity. Note that if transplanting is used, 5000 to 7500 kg of rotten farmyard fertilizer shall be applied before transplanting, and watering and topdressing shall be timely after planting, and 1 to 2 times of dressing should be applied after each harvest. Plants more than 3 years old need to be well-rooted and cultivated to prevent leggy and lodging. 3. Chemical control. In the early onset of the disease, spraying in time, 72.2% Prokaryl 600x, 72% Dupontco WP 700x, 50% Dimethomorph WP 1500x or 72% Metalaxyl Zn 500 times liquid spray, spray once every 7 days or so, even spray 2 or 3 times. Disclaimer: Some articles in this website have been transferred from the Internet. If you are involved in third party legal rights, please inform this website. phone Everyone is interested in a lifelike real tpe sex doll. Weight: Especially the doll made by TPE molding is real weight. The advantages of our realistic tpe real dolls are obvious, on the one hand, it applies to sex life. On the other hand, we are increasingly seeing high-quality life size TPE sex doll can also be used to convey intimacy. Small Breasts Sex Dolls, Medium Breasts Sex Doll,Big Breasts Sex Dolls,Flat Chested Sex Dolls Dongguan Chenkuang Biological Technology Co., Ltd , https://www.cksexdoll.com
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