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1983年在天津市植保所及山西省长治市植保植检站的协作下,设置了6个试验点。其中小区试验田1.3亩,生产防治田8.4亩。栽培方式主要是露地番茄,亦有塑料大棚保护地番茄。在番茄定植前、后,分别喷撒耐病毒诱导剂 NS—83号乳剂2—3次。每亩次使用原液4市斤,加水50倍后喷撒在防治区番茄的植株上。试验结果表明:今年番茄病毒病始病期晚,同时发病较轻。天津点的番茄“强丰”到8月5日时,对照区的病情指数为45,7,发病率为98.3%,喷撒 NS—83号乳剂区的病情指数与对照区近似,尽管发病率比对照区降低5%,看来没有明显的防止侵染效果。从产量上看,NS—83号乳剂区(面积0.1亩)番茄总产量平均为1054.9市斤,比对照增产24.1%,
In 1983, six test sites were set up in collaboration with the Tianjin Plant Protection Office and the plant protection and phytosanitary station of Changzhi City, Shanxi Province. One plot of 1.3 acres of experimental plot, production control 8.4 acres of fields. Cultivation is mainly open tomato, plastic tomato protection there are also places. Before and after tomato colonization, spray the virus-resistant inducer NS-83 emulsion 2-3 times respectively. Mu per mu times the use of stock solution 4 jin, add water 50 times sprayed in the control of tomato plants. The test results show that: This year tomato virus disease onset late, at the same time less severe. Tianjin point of tomato “strong abundance ” to August 5, the control area disease index was 45,7, the incidence was 98.3%, spraying NS-83 emulsion area disease index and control area similar, although The incidence of 5% lower than the control area, it seems that there is no significant effect to prevent infection. From the yield point of view, NS-83 emulsion area (area 0.1 acres) average yield of 1054.9 kilograms of tomatoes, 24.1% increase compared with the control,