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1998年我团为18个农业单位各配备了全方位深松机，对1666hm’优耕和秋耕地进行T全方位深松，并在我团二连的两块棉田做了对照试验。正试验概况1·正试验设计（l）选取两块相邻条田13斗2—7号和13斗2－8号，前作均为冬麦地，后作均种植新陆早六号棉花。13斗2—7号地干1997年7月
In 1998, each of the 18 agricultural units in our group was equipped with a full range of subsoiling machines to conduct full-depth subsoiling of the 1666 hm? Superior tillage and autumn cultivars and to conduct a controlled trial on the two cotton fields in our company.正 试验 概况 1 · Experimental Design (l) Select two adjacent fields Tian Dou 13 2-7 and No. 13 Doude 2-8, both before the winter wheat field, after planting Xinluo as early as No. 6 cotton. 13 bucket 2-7 dry in July 1997