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“再字”形挖稻根器、“跃进式”快速挖稻根铲(附图解)是我们在1958年12月前乐会县病虫测报站(现在并入琼海县)设计制造成功的,经过使用证明大大提高挖稻根的速度和质量。其主要的优点是: (一)效率高速度快,比一般稻根铲、锄挖稻根的效率大15—20倍,每小寸能挖稻根480—600丛,每挖取一个样本区仅花20—25分钟即完毕。 (二)轻便、操作简单,工作过程半自动化。 (三)经济耐用,费用仅须要2.5—3元,耐用又能节约劳力和时间。现将构造、工作原理和使用方法简
“Re-word” digging rice root device, “fast forward” fast digging rice shovel (with photos) We are in December 1958 former Le County Pest Report Station (now incorporated Qionghai County) design and manufacture of successful , After the use of evidence that greatly enhance the speed and quality of digging rice roots. Its main advantages are: (1) high efficiency and speed, than the average rice root shovel, hoe digging rice root efficiency 15-20 times, each small size to dig rice root 480-600 plexus, each dug a sample area It takes only 20-25 minutes to finish. (B) lightweight, easy to operate, semi-automated process. (C) economical and durable, the cost is only 2.5-3 yuan, durable and can save labor and time. Now the structure, working principle and the use of Jane