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我们基层单位缺少考种计算仪器,如求每穗平均粒数等,全靠一粒一粒地数,工作效率很低,还容易出差错。为了解决这个困难问题,我们在误差允许范围内,采用秤称考种方法。此法简单易行,只要一台小天平(一般能称200克,感量0.2克就行)。具体步骤是:1.把考种材料量完株高,穗长,记下穗数以后,混合脱粒,将实粒和空秕粒分开;2.分别称量实粒和空秕粒的总克数;3.求100粒克重。根据两内项之积等于两外项之
Our grass-roots units lack of test equipment, such as seeking the average number of grains per spike, thanks to a grain of land, work efficiency is very low, but also easy to go wrong. In order to solve this difficult problem, we use the standard test method within the allowable range of error. This method is simple, as long as a small balance (generally can say 200 grams, the sense of volume 0.2 grams on the line). The specific steps are: 1. The amount of test materials finished plant height, spike length, record the number of spikes, mixed threshing, the solid particles and empty particles separated; Number; 3. Find 100 grams weight. The product of the two inner terms is equal to the two outer terms