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田间试验种类很多,作物品种区试和引种试验是田间试验的重要组成部分。作物品种区试是从研究育种到培养出种子的重要环节。区域试验和引种试验进行的好坏密切关系推广优良品种和发展农业生产的成败。由于偶然原因产生的观察值和实际值之间的差异叫做
There are many types of field trials. Regional trials and introduction trials of crop varieties are an important part of field trials. Regional trials of crop varieties are an important part of research from breeding to seed cultivation. The success of regional trials and introduction trials is closely related to the promotion of good varieties and the development of agricultural production. The difference between the observed value and the actual value due to chance is called