1.Institute of Plant Protection，Ningxia Academy of Agricultural and Forestry Sciences，Yinchuan，Ningxia 750002; 2.Institute of Genetic Resources，Ningxia Academy of Agricultural and Forestry Sciences，Yinchuan，Ningxia 750002; 3.Yinxi Administrative Office of Ecological Protective Forest，Yinchuan，Ningxia 750021;4.Ningxia Agricultural Technology Promotion General Station，Yinchuan，Ningxia 750001
Taking ‘Ningqi No.1’ as material，the quantitative dynamic and the vertical activity habits of population of Paratrioza sinica Yang & Li were studied.The results showed that amount of Paratrioza sinica Yang & Li was the most in June.The vertical activity habits of each treatment from the strong to weak order was the middle-upper layer，the middle layer，the middle-lower layer，the lower layer and the upper layer.The middle-upper layer and the middle layer in which the vertical height had the strongest activities habits had significant difference with other treatments.It showed that the middle-upper layer and the middle layer were the most important spray areas when control its population in field.
References:
[1]吴福桢,高兆宁,郭予元.宁夏农业昆虫图志[M].2集.银川:宁夏人民出版社,1982. [2]刘彦宁,任月萍.几种农药防治枸杞木虱和枸杞刺皮瘿螨的药效评价[J].农业科学研究,2005,26(3):96. [3]段立清,刘宽余,Otvos Imre S,等.木虱啮小蜂对枸杞、枸杞木虱的行为反应[J].昆虫学报,2005,48(5):725.