论文部分内容阅读
在茶园中,传统的施药方法是用工农-16型背负式或工农-36型担架式喷雾器进行常量喷雾,这些喷雾方法都是液力式雾化,所采用的雾化器均为切向离心式涡流芯喷头,所产生的雾滴直径较粗,沉降较快,在茶树树冠层作水平扩散分布较难,因此,每亩用液量多达75～125公斤。农药用量较多,耗工大,防治成本高,而且容易造成对环境污染和破坏生态平衡。近年来,发展了低容量和超低容量的施药方法。
In the tea plantation, the traditional spraying method is constant spraying with a worker-peasant-16 knapsack or a worker-peasant -36 stretcher sprayer. These spraying methods are both liquid atomizing and the atomizers used are tangential Centrifugal eddy current nozzle, the droplets generated by the coarser diameter, rapid settlement, the tea tree canopy for horizontal diffusion distribution more difficult, therefore, the amount of liquid per acre as much as 75 to 125 kg. More pesticides, heavy labor, prevention and control costs are high, but also easily lead to environmental pollution and damage the ecological balance. In recent years, the development of low-volume and ultra-low-volume methods of application.