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余姚茶场共有茶园面积855田,投产面积830亩。1975年开始建设固定管道式喷灌系统,78年列为全国茶叶喷灌试点单位,81年2月竣工,共建成提水工程3处,加压泵站4处,安装喷灌用变压器4台375千伏安,架设10千伏输电线路1.9公里,埋设主管7085米,支管5030米,配置余工农Ⅱ型喷头289只,总投资282141元。喷灌系统的有效控制面积为741亩,占投产茶园总面积的90%,此外,还有39亩采用小型流动喷灌机喷灌。随着喷灌系统的陆续建成,为茶叶的高产稳产创造了良好的条件。据统计,全场茶叶总产和亩产,分别由1975年的2160担和260斤增加到1982年的4300担和518斤,成为全国茶叶单产最高的国营茶场。现对该场固定管道式喷灌系统的技术经济指标作如下分析:
Yuyao tea plantation total area of 855 tea fields, production area of 830 acres. 1975 began construction of fixed pipe sprinkler irrigation system, 78 years as a national pilot unit of tea sprinkler irrigation, completed in February 81, a total of three water pumping projects, pressurization pumping station 4, the installation of irrigation transformer 4 375 kV An, erecting 10 kilovolt transmission line 1.9 kilometers, buried in charge of 7085 meters, 5030 meters branch, configuration workers and peasants Ⅱ type nozzle 289, a total investment of 282,141 yuan. Sprinkler irrigation system effective control area of 741 acres, accounting for the total area of tea production 90%, in addition, there are 39 acres of small mobile irrigation sprinkler irrigation. With the sprinkler irrigation system built one after another, for the tea of high and stable production has created good conditions. According to statistics, the total output of tea and per mu in the audience increased from 2160 to 260 kg in 1975 and 4300 to 518 kg in 1982, making it the state-run tea plantation with the highest yield of tea in the country. Now the field of fixed pipe sprinkler irrigation system technical and economic indicators as follows: