Symptoms of watermelon downy mildew Watermelon downy mildew only damages the leaves of watermelon. After infection, water-stained chlorotic spots appear on the leaves, and then develop into yellow spots. After expansion, they are restricted to polygonal yellow-brown lesions by leaf veins. When the
Read moreWhen the pesticide is sprayed, it is affected by the weather and the external environmental factors, which will affect the effect of spraying pesticides and fail to meet the expected requirements. According to different weather conditions, the precautions for spraying pesticid
Read moreAbstract Wang Guangzu Wei Fengwu material is one of the three pillars of modern civilization. New materials are the foundation and precursor of the new technological revolution. Throughout the history of human use of materials, it can be clearly seen that every discovery and application of ne
Read moreIn order to further strengthen the supervision of fire protection products, promote the establishment of a sound protection product supervision and management mechanism, and effectively eliminate the fire hazards caused by the quality of fire protection products, on the morning of November 28, the T
Read moreIn recent years, cold water stone pillows have appeared on the market, and pillows made of gypsum ore have been used. Since ancient times, there have been habits of sleeping pillows, wooden pillows, and other hard pillows. The stone pillows are cool, do not wrap the head, and
Read more70 square is a common area of ​​small two rooms, many owners will ask about 70 square decoration budget about how much? The decoration budget will be affected by various aspects, such as renovation programs, styles, and grades. Today, I will introduce to you about the approximate cos
Read moreFood grade silica gel and industrial grade silica gel are collectively called mold silica gel, but the two fields are different. Food grade silica gel refers to the mold of food series, and industrial grade silica gel refers to the mold of architecture, handicraft and other industries! Food grade
Read moreThe boutiques are often seen when we go shopping. People all like fine things, so the boutiques are still very market. In order to compete in the business, boutiques want to make their own characteristics, look good and unique Boutiques can attract customers' eyeball classic consumption. The f
Read moreIn recent years, with the increase in the price of mahogany, many businesses have added words such as "Dan", "Pear", and "Liquor" to various types of wood in order to seek benefits, thinking that adding these words can be too high. Is African rose
Read moreModern solar cells can use light energy to produce electrons and holes, which are then transferred from semiconductor materials to external circuits for use by people. However, few people are concerned about another type of power generation driven by light en
Read moreGuiyang is the capital city of Guizhou. There are various decoration companies in Guiyang, and the offer for decoration in Guiyang is uneven. Most of the decoration companies are still more formal, and the quotes are relatively reasonable. However, there are a number of small-scale decoration comp
Read moreWith the improvement of people's living standards, the awareness of indoor environment is gradually improving, and the health of themselves and their families is becoming more and more concerned. In recent years, the problems caused by indoor decoration pollution have caused peopl
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