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据调查,没有灌溉水源的稻农体会到,在秧田拔秧费力的大小,与水稻品种的抗旱能力有关。这种来自直感的相关性启发了我们设计一种工具,用以测定不同品种所需拔秧力的大小,并将测得的数据与在旱田进行品种抗旱性筛选的结果相比较。我们利用秤量较大的手持弹簧秤来测定拔秧的拉力,秤勾上悬挂一个自制的铝质夹钳,夹子内边垫以胶皮或细砂纸,以便能将秧苗夹紧(图1)。
According to the survey, rice farmers without irrigation water sources will find it hard to pick up their seedlings in the seedling, which is related to the drought resistance of the rice varieties. This correlation from straightness inspired us to devise a tool to measure the amount of baring power required for different varieties and to compare the measured data with the results of drought resistance screening on a variety of drylands. We use the weighed hand-held spring balance to measure pulling force of seedlings. A self-made aluminum clamp is hung on the scale hook. The inside pad of the clamp is made of rubber or fine sandpaper so as to clamp the seedlings (Figure 1).