摘要
核桃横沟象是核桃的主要害虫。在陕西商州调查,以幼虫危害核桃根际皮层,虫株率达50%,株虫口最多达100头,受害后根颈皮层被环剥,树势衰弱,产量下降,重则整株枯死。研究表明,采用营林措施、人工防治、生物防治、化学药剂防治等综合防治技术,防治效果明显。
Dyscerus juglans is the major pest attacking walnut in Shangzhou. The larva of it attacking the bark of roots. The infected plants can reach 50% and maximum number of pest can reach 100 per plant. The effect of the pest can cause the decline of vitality of the tree or even the death of the whole plant. The experiment showed that integrated measures like management measures, manual killing, biological control as well as the chemical control can achieve significant result.
出处
《陕西林业科技》
2012年第3期75-77,共3页
Shaanxi Forest Science and Technology
关键词
核桃横沟象
生物学特性
综合防治技术
Dyscerus juglans
biological characteristics
integrated control
