甜菜擗叶试验１９９３年彰武县糖厂在双庙乡三台子村李云山的甜菜田做僻叶试验，从８月１０日开始，每隔５天擗一次，每次擗５片叶，结果如下。从上表看出，甜菜生长期间，擗一次叶即减产降糖，擗四次叶则减产降糖极显著，说明擗叶子的次数越多，对甜菜的产量和含糖率影响... Sugar beet leaf test In 1993, Zhangwu County sugar factory in Shuangmiao Township Santai Li Yunshan sugar beet field to do the remote leaf test, starting from August 10, every 5 days 擗 once, each 擗 5 leaves, the results are as follows . It can be seen from the above table that during the growth of beet, the yield of sugar and the yield of sugar beet and the sugar content of sugar beet are more affected by the decrease of the output of sugar during the growth of sugar beet.