摘要
在前茬高产小麦群体郁蔽情况下,套种玉米的产量(y)随播期(x)而变化的回归方程为^y=529.807+6.284x-0.434x2(R=0.981**),据此求得高产最适播种时间为6月1日,其产量期望为574.83 kg.666.7 m-2。从玉米产量(y)随收获期(x)而变化的回归方程^y=504.046+11.265x-0.544x2(R=0.999**),求得高产最佳收获期为9月26日,其产量期望为562.36 kg.666.7 m-2。
In the case that the crops of high yield wheat grow up,the interplanted maize yield （y） changing with the seeding time （x） regression equation is y^^ = 529. 807 ＋ 6. 284x - 0.434x^2 （ R =0.981^ ＊ ＊ ）, accordingly the best seeding time of high yield is June 1 ,the expected yield is 574.83 kg 666.7 m ^-2. The regression equation of the maize yield changing with the harvesting time （x） is y ^^= 504. 046 ＋ 11. 265x - 0. 544x^2 （ R = 0. 999^ ＊ ＊ ）, thus the best harvesting time of high yield is September 26,and the expected yield is 562.36kg666.7 m^-2 .
出处
《河南科技学院学报》
2007年第2期18-20,共3页
Journal of Henan Institute of Science and Technology(Natural Science Edition)
关键词
夏玉米
播种期
收获期
产量
summer maize
seeding time
harvesting time
