花生不同播种深度的出苗期模拟研究

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。

Simulation Study of Peanut Emergence Date with Different Sowing Depth

With the peanut varieties Fenghua 1 and Baisha 1016 as materials,the effects of three sowing depths of 3 cm,6 cm,and 9 cm on the peanut emergence date were studied through observing and recording the ground temperature at the depth of 5 cm from seeding to emergence.The results showed that at the same sowing depth,the effective accumulated temperature of small-grain peanut Baisha 1016 was less than that of the big-grain peanut Fenghua 1.But from the growth curve established with the effective accumulated temperature and the sowing depth,the effective accumulated temperature of the two varieties were found becoming close to each other gradually with the increase of sowing depth.The equations between the sowing depth and the effective accumulated temperature of Fenghua 1 and Baisha 1016 were Y=153.01e0.0474x and Y=126.38e0.0612x respectively.