The common disease of chrysanthemum is gray mold, and the control method can be sprayed with any one of fungicides such as 1500 times of chlorhexidine, 500 times of mancozeb, 150 times of sylphyrin, and 600 times of chlorothalonil. . It is generally used 2 to 3 times, with an interval of 7 to 10 days, and it is better to rotate the medicine. Chalk disease generally harms the roots. The cultivation substrate should be strictly selected, and precautions such as exposure or mixing should be used before use. Drug control can be rooted with diclosan (500 times solution) or pentachloronitrobenzene (800 times solution) during growth. Generally, it can be eliminated by applying twice, and the interval is about 10 days. Stem rot usually occurs on the seedbed, and the symptoms are the rot of the stem of the base of the seedling. Timely transplanting seedlings is the fundamental way to manage. The drug control is rooted with 600 times of anti-virus cockroach or 600 times of DuPont gram, and the effect is better. The common pests are mainly aphids and red spiders, and the drug control is sprayed with 1500 times of aphids or 3000 times of avermectin. Generally, it can be solved by spraying twice, once every 7~10 days. Ballistic Vest,Bulletproof Vest,Bullet Proof Body Armor,Military Wear Co., Ltd. , http://www.chinabodyarmor.com