摘要： 在京郊地区于2003-2005年进行了紫花苜蓿配合施肥试验。采用两因素裂区设计,以鲜草产量、干草产量、茎叶比为形状指标,测定并分析了不同磷钾肥处理对紫花苜蓿产量的影响。试验结果表明:配合施肥可显著提高苜蓿的产量(p<0.05),其中施肥处理6(45.8 kg/hm2P2O5和12.5 kg/hm2K2O)中对提高苜蓿产量的效果最为明显。2004年和2005年的鲜草产量分别为67900.5 kg/hm2和97320 kg/hm2,比对照增产19.3%和10.7%;干草产量分别为18870 kg/hm2和22999.5 kg/hm2,比对照增产22.9%和23%。方差分析表明,不同施肥处理之间鲜草产量、干草产量、茎叶比呈显著性差异(P<0.05)。
关键词:
配合施肥,
紫花苜蓿,
鲜草产量,
干草产量
Abstract: The combined fertilizat ion experiments were carried out in Beijing area from 2003 year to 2005 year.Twoparameter msplitting plot design was used to determine the effects of combinat ions of N, P on fresh yield, dry yield and the mratio of stem/ leaf in alfalfa. Experiments showed that combined fertilization could signif icantly elevate yield of alfalfa, The mhighest yield was gained when fertilizing 45. 8 kg/ ha P2O5 and 12. 5 kg/ ha K2O. The fresh yield of 2004 year and 2005m year were 67 900. 5 kg/ ha and 97 320 kg/ ha, higher 19. 3%, 10. 7% than CK, and the dry yield of 2004 year and 2005 myear were 18 870 kg/ ha and 22 999. 5 kg/ ha, higher 22. 9% and 23% than CK.ANOVA analysis showed that there was msignificantly differences on fresh yield, dry yield and the ratio of stem/ leaf under different combinations at the 0. 05 level.
Key words:
Combined fert ilization,
Alfalfa,
Fresh yield,
Dry yield
中图分类号:
李源, 王赞, 高洪文, 刘贵波. 磷钾配合施肥对紫花苜蓿产量的影响[J]. 华北农学报, 2008, 23(S2): 315-318. doi: 10.7668/hbnxb.2008.S2.073.
LI Yuan, WANG Zan, GAO Hong-wen, LIU Gui-bo. Effects of P and K Combined Fertilization on the Yield of Alfalfa[J]. ACTA AGRICULTURAE BOREALI-SINICA, 2008, 23(S2): 315-318. doi: 10.7668/hbnxb.2008.S2.073.