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一九七五年八月下旬,在本所三号山南侧梯层壮龄菜茶茶园,用手提式超低容量喷雾器(上海光明仪表厂产品,以干电池为动力)进行治虫效果试验。茶树经七四年夏重修剪及七五年春、夏对新梢进行“打顶养蓬”,树冠高幅比较整齐平衡,试验期间无采茶、耕管等活动。试验在午后2时开始进行,当时气候情况是晴到多云、时有小阵雨、
In late August 1975, we tested the pest control effect on the tea plantation at the Zhuangling Vegetable Tea Garden on the south side of No. 3 Mountain of our institute using a portable ultra-low capacity sprayer (Shanghai Guangming Instrument Factory, powered by dry battery). Tea tree pruning in the summer of 1974 and the spring of 1975, summer on the shoots to “cover the top of the canopy”, the crown is relatively high and neat balance, no tea, farming and other activities during the trial. The trial started at 2 pm. At that time, the weather conditions were clear and cloudy with light showers,