How to deal with yellow leaf rotten leaves in autumn spinach? Time is October, which is the best time for spinach planting. The most common autumn spinach planting is yellow leaf rotten leaves. This is mostly downy mildew, spinach downy mildew. It is a fungal disease. The pathogen is overwintered on the host, on the seed or in the leaf of the diseased body. The damage is relatively large, and it will lead to the rejection in severe cases. This article mainly introduces the prevention technology of spinach downy mildew. Spinach downy mildew symptoms Spinach downy mildew mainly harms the leaves, and the pale yellow spots on the leaves at the beginning of the disease develop into pale yellow lesions, which are later expanded into irregular lesions. The leaf back lesions are covered with white mildew, and the lesions expand upward from the lower part of the plant. It is easy to develop when there is dew at night. For the prevention and control of downy mildew, it is necessary to keep the soil moist in the aspect of water and fertilizer, so that it can grow normally and healthily. When fertilizing, pay attention to the application of phosphorus and potassium fertilizer. How to do yellow leaf rotten leaves in autumn spinach planting, spraying in the early stage of the disease, the agent can use 25% toxic fungus WP 600 times solution, 75% chlorothalonil WP 500 times solution, 64% antivirus 矾Wet powder 400 times liquid, metalaxyl manganese zinc 400 ~ 500 times liquid, etc., the above various drugs are used alternately, spray once every 5 to 7 days, even spray 2 to 3 times, at the same time for serious plants to be pulled out in time In order to avoid infecting other crops. This article URL: How to do with yellow leaf rotten leaves in autumn spinach planting Vitamins are a type of trace organic substances that humans and animals must obtain from food in order to maintain normal physiological functions. In terms of physiological functions, vitamins are neither a raw material for tissues nor a substance for supplying energy, but they are an indispensable substance for the body. It has many types and different chemical structures. Most of them are the components of the coenzyme (or prosthetic group) of certain enzymes. They are the indispensable compounds for maintaining the normal growth (growth, health, reproduction and production function) of the body. It plays a catalytic role in the body to promote the synthesis and degradation of major nutrients (proteins, fats, carbohydrates, etc.), thereby controlling metabolism. Vitamins are essentially low-molecular organic compounds. They cannot be synthesized in the body, or the amount synthesized is difficult to meet the needs of the body, so they must be supplied from the outside. The daily requirement of vitamins is very small (usually measured in milligrams or micrograms). They are neither a raw material for body tissues nor a substance for energy supply in the body. However, they do not regulate material metabolism, promote growth and development, and maintain physiological functions. Vitamin K2 MK-7, Vitamin C, Vitamin E, Vitamin K2, Vitamin H, Vitamin D3 Xi'an Gawen Biotechnology Co., Ltd , https://www.ahualynbio.com