甜菜生产或试验研究,必须在田间进行。而田间试验除要求土地肥力均匀,耕作管理一致外,密度是否一致对试验结果的准确性影响很大。理想的密度应该是株行距一致,小区的总苗数相等,但在实际操作当中,由于各种原因很难达到这一要求,因而影响试验研究的准确性,这是甜菜科研工作者经常遇到的一个实际 Beet production or pilot studies must be conducted in the field. In addition to the field test requires uniform soil fertility, tillage management, the density of the same accuracy of the test results have a great impact. The ideal density should be the same line spacing of plants, the total number of seedlings in the same area, but in practice, due to various reasons it is difficult to meet this requirement, thus affecting the accuracy of experimental research, which beet workers often encounter A real one