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以丰花1号、白沙1016两个花生品种为试验材料,采取3、6、9 cm三个播种深度种植,通过记载从播种到全苗的5 cm地温,研究不同播种深度对花生出苗的影响。结果表明:在相同播种深度条件下,小花生品种白沙1016出苗所需有效积温小于大花生品种丰花1号。但是通过三个播种深度与出苗所需有效积温之间建立的生长曲线可以看出,随着播种深度的增加两个品种出苗所需要的有效积温逐渐接近。丰花1号播种深度与有效积温关系的方程为:Y=153.01e0.0474x,白沙1016播种深度与有效积温关系的方程为:Y=126.38e0.0612x。
Two peanut varieties Feng-hu-1 and Baisha 1016 were used as experimental materials, and three planting depths of 3, 6 and 9 cm were used to study the effects of different planting depths on peanut emergence by recording the 5-cm ground temperature from seeding to whole seedling . The results showed that the effective accumulated temperature required for emergence of Baisha 1016, a small peanut variety, was less than that of the large peanut variety “Huahua No.1” at the same sowing depth. However, the growth curve established between the three sowing depths and the effective accumulated temperature required for emergence shows that the effective accumulated temperatures required for emergence of the two cultivars gradually approached as the sowing depth increased. The equation of the relationship between sowing depth of Fenghua 1 and effective accumulated temperature is: Y = 153.01e0.0474x, the equation of sowing depth of Baisha 1016 and effective accumulated temperature is Y = 126.38e0.0612x.