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为了减少由害虫为害而引起的桔果绿斑,以保证市场竞争,佛罗里达州大学的R.F.Brooks和J.L.Knapp对柑桔糠片蚧的防治进行了研究。试验分两个部分:第一部分是用不同药剂处理,以求防治糠片蚧的最好药剂;第二部分是采用不同的喷药时期,以求防治的最佳时期。 一、试验材料及方法 按随机区纽设计的试验方法来排列试验小区。1979年的试验小区为2株树,重复4次,1982年的小区为一株树,重复10次。用Bean785型机动高压喷射枪喷雾,每处理喷
In order to reduce vermilion spots caused by pests and to ensure market competition, R. F. Brooks and J. L. Knapp of the University of Florida studied the prevention and control of Citrus chaff. The test is divided into two parts: the first part is treated with different agents in order to prevent the branching Kui Kui best agent; the second part is the use of different spraying period, in order to control the best period. First, the test materials and methods Randomized New Zealand designed test method to arrange the test plot. The experimental plot in 1979 was 2 trees and was repeated 4 times. In 1982, the plot was a tree and was repeated 10 times. With Bean785 high-pressure spray gun spray, each treatment spray