問題的提出一个良好的田间試驗設計,首先要能估計出并降低試驗誤差,提高試驗的精确度;同时,还要求使用較少的試驗地、人力与物力。一般說,随机区組設計是符合这些条件的,而一度风行的对照区对比法,情况則完全相反。赵仁鎔等曾指出:“对照区对比法的任何排列方法,都不如一般随机区組設計的精确。”这个結論是有道理的。目前国内各級农业科学研究单位已普遍地采用随机区組設計,但对其試驗結果却有 PROBLEM PROBLEMS A good field trial design should first estimate and reduce the test error and improve the accuracy of the test. At the same time, it requires the use of less test ground, manpower and material resources. In general, randomized block design is in line with these conditions, while the once popular control area contrast method, the situation is exactly the opposite. Zhao Renrong et al. Pointed out: “Any arrangement of the control area contrast method is not as accurate as that of a general randomized block design.” This conclusion makes sense. At present, agricultural scientific research units at all levels have generally adopted random block design, but the test results have