岷县草地牧草病害、有毒植物危害情况的调查

岷县天然草地总面积 2 1.9万hm2 ,通过抽样调查 ,牧草病害主要有褐斑病、白粉病、锈病、根腐病等 ,引起产草量下降 ,品质变劣 ,牧草损失 4 8.2万t/a ,经济损失达 1.2亿元。草地有毒植物共有 12科 19属 2 8种。调查了毒草分布及危害情况 ,其中小萱草和水杨梅对羊的危害极大。牲畜由于饥饿等原因误食毒草引起中毒死亡的大家畜 550 0匹 /a ,羊 750 0只 /a ,损失 1170万元

The Investigation on Forage Diseases and Poisonous Plants on Grassland of Min County

There are 219 thousand hm 2 grassland in Min County. The investigation through sampling shows that the major diseases on native forages are Pseudopeziza medicaginis, Enysiphy polygoni, Puccinia graminis and Fusarium oxysporium etc. Which lead to the low yield and poor quality of grass. The loss of grass yield is 482 thousand t/yr and loss of benefit is 0.12 billion Yuan RMB due to these diseases. The investigation on the poisonous plants show that of these harmful vegetation belong to 12 families, 19 genus, and 28 species. Among them, Hemerocallis clumortierii and Adins rubella have the heading influence on the animal production, 5500 large animals and 7500 sheep per year die of poison when they eat these plants carelessly. The loss of benefit is 11.7 million Yuan RMB due to poison.