Due to the variety of greenhouse vegetables, various cultivation methods, the farming system is complex, the temperature is high, the humidity is high, the diseases are prone to occur, and there are many types of diseases and pests, which is a serious problem. Some vegetable farmers have applied various kinds of vegetable diseases, such as fungal diseases, bacterial diseases, viral diseases, and physiological diseases, and have seen changes in the leaves and fruit of vegetables to spray pesticides; Caused by the worm or caused, and regardless of the use of drugs can not cure their worms, as long as the insects hit the drug to kill. This practice is wrong. Each pest has its own unique habits and damage characteristics. For example, powdery mildew is easy to infect the young part of the vegetables, and black spot disease is easy to infiltrate from the lower leaves. The worms gather in the back of the leaves to absorb vegetable juices. Most of the pesticides used to prevent and treat diseases and pests are particularly strong in their specificity. They are often directed against the diseases or insect pests caused by one or a certain type of pathogens and are ineffective against other diseases or insect pests. Therefore, it must be due to illness and insecticide. Individual farmers have seen pests in the sheds and want to eliminate them completely. It is completely unnecessary. From an economic point of view, pests in sheds do not need to be controlled as long as they do not exceed the control index, otherwise they may reduce the output-to-output ratio, which is not worth the candle. Urine Cups Stool Cups Lab Cups Lab Usage Urine Cups,120Ml Urine Cups,40Ml Urine Cups,Lab Urine Cups Luck Medical Consumables Co.,LIMITED , https://www.luckmedical.com