[:en]1. Anthracnose of Phyllostachys pubescens
Symptoms: the disease begins mainly at the top or edge of the leaf. In the early stage of the disease, it is a dark green irregular spot, with water stains, and gradually spread to the upper leaves. The middle stage is semicircular to amorphous, with dark brown edge and obvious boundary. In the later stage, the outer edge of the lesion has a yellow halo, and the middle part of the lesion is grayish brown or grayish white to yellowish brown. The round lines on the surface of the spots are obvious or not, and there are small black spots on them.
The leaves begin to turn yellow and die. Prevention methods:
1. Strengthen cultivation management and eliminate pathogens.
2. Increase the application of organic fertilizer, phosphorus fertilizer and potassium fertilizer to promote the healthy development of plants and enhance the disease resistance. It is reported abroad that the application of fish manure can reduce the incidence.
3. 1% Bordeaux should be sprayed after the growth of new shoots to prevent initial infection. In the rainy weather from March to April, a spray should be carried out to prevent diseases.
From April 6 to September, after the old disease leaves were removed, the following chemicals were selected alternately for control: 27% high lipid membrane emulsion 100-200 times, 65% zineb wettable powder 600-800 times, 80% pyrimidine 600-800 times, 60% anthrax 800-1000 times.
2. Round spot of Phyllostachys pubescens
Symptoms: the pathogen often damages the leaves, initially showing reddish brown spots, rapidly expanding into semicircular or round dark brown spots, with light color in the middle, dark brown in the later stage, and yellow brown blister like processes on the back of the spots. When there are many leaf spots, the leaf tissues between the spots lose green, turn yellow and die.
Rain and fog are the main conditions for disease prevalence. In the years with frequent and early rainfall, the disease is early and serious. The onset of the disease was early and mild in spring drought years. There is less rain, but the fog is bigger and the incidence is higher. The incidence of strong plants is lower, while that of weak plants is higher.
Prevention methods:
The diseased leaves can be removed and destroyed in time. Chemical control can be applied to Bordeaux solution, 500 fold solution of 70% chlorothalonil, 800 fold solution of 50% bactericide or 500 fold solution of 65% chlorothalonil in growing season.[:zh]1.富貴竹炭疽病
癥狀:疾病開始主要發生在葉子的頂端或邊緣。在發病初期，它是壹個深綠色的不規則斑點，有水漬，並逐漸蔓延到上部葉片。中間階段為半圓形至不定形，邊緣為深棕色，邊界明顯。後期，病斑的外緣有黃色暈圈，斑的中部為灰棕色或灰白色至黃棕色。斑點表面的圓形線條明顯或不明顯，上面有小黑點，葉子開始變黃並死亡。
預防方法:
1.加強栽培管理，消除病原體。
2.增加有機肥、磷肥和鉀肥的施用，促進植物健康發展，增強抗病能力。國外報道，施用魚糞可以降低發病率。
3.新梢生長後應噴灑1%波爾多液，以防初次感染。在3月至4月的梅雨天氣，應進行壹次噴灑以預防疾病。
4月6日至9月，老病葉摘除後，交替選用以下化學藥劑防治:27%高脂膜乳劑100-200次，65%代森鋅可濕性粉劑600-800次，80%稻瘟酰胺600-800次，60%炭疽800-1000次。
2.富貴竹圓斑病
癥狀:病原體經常損傷葉片，最初表現為紅棕色斑點，迅速擴展成半圓形或圓形黑褐色病斑，中間為淺色，後期邊緣為深棕色，病斑背面有黃褐色水泡狀突起。當有許多葉片病斑時，病斑之間的葉片組織失去綠色，變黃並死亡。
雨水和霧天是疾病流行的主要條件。在降雨頻繁且早的年份，發病早且嚴重。春季幹旱年份發病早且溫和。雨少了，但霧更大了，發病率也更高了。強壯植物的發病率較低，而虛弱植物的發病率較高。
預防方法:
病葉及時清除和破壞，化學防治可噴灑在生長季節波爾多液、70%百菌清500倍液、50%除菌800倍液或65%百菌清500倍液中。[:]