An efficient cost- and labor-saving method is proposed for controlling the population of two kinds or more of different species of insectan pests in a field by means of distributing dispensers of sex pheromone compounds for the respective species of the insects when one of the sex pheromone compounds is an unsaturated C10 to C12 alcohol and the other is an unsaturated C14 to C20 acetate or aldehyde. When these two classes of the compounds are mixed in such a proportion that the overall solubility parameter 8 of the mixture is 9.1 to 9.7 and the mixture is contained in a dispenser body made of polyethylene or a copolymer mainly composed of ethylene moiety, the two compounds can be concurrently emitted from the dispenser in the form of a vapor each at a controlled rate over a desired length of time.
本发明提出了一种节约成本和劳动力的高效方法,用于控制田间两种或两种以上不同种类昆虫害虫的数量,其方法是分发用于相应种类昆虫的性信息素化合物,其中一种性信息素化合物为不饱和 C10 至 C12 醇,另一种为不饱和 C14 至 C20
乙酸酯或醛。 当这两类化合物按一定比例混合,使混合物的总溶解度参数 8 为 9.1 至 9.7,并将混合物装入由聚
乙烯或主要由
乙烯分子组成的共聚物制成的分发器中时,这两种化合物可以在所需的时间内以蒸汽的形式同时从分发器中以各自可控的速率释放出来。