沼渣与化肥配施对马铃薯产量与品质的影响

为探究黑龙江省马铃薯合理施肥水平,提高其产量,以马铃薯品种克新18为材料,采用田间试验方法,研究沼渣与化肥不同比例配合施用对马铃薯产量和品质的影响。结果表明:沼渣和化肥配合使用可以促进马铃薯的生长发育,使马铃薯的现蕾期提前4~5d,块茎膨大期提前3~4d;马铃薯的生理指标在沼渣施用量15~30t时,随着沼渣施用量的增加呈现明显的正相关。沼渣可以提高马铃薯产量2.3%~11.8%;配合施肥能够提高马铃薯的品质,使其淀粉提高了0.05%~0.04%,还原糖增加了0.02%~0.03%。

Effect of Combined Application of Chemical Fertilizer and Biogas Residue on the Yield and Quality of Potatoes

In order to investigate the proper fertilization of potatoes for Heilongjiang province and to increase its yield,taking potato variety Kexin 18as material,field experiment was used to study the effect of different proportion of chemical fertilizer and biogas residue on the yield and quality of potatoes.The results showed that the growth and development could be improved by combined application of biogas and fertilizer.The budding growth period and tuber expansion period of potatoes were 4～5days and 3～4days in advance,respectively.The physiological indicators of potatoes were showed a significant positive correlation with the increasing of biogas fertilizer in 15～30tof the biogas residue application.Biogas residue could increase the production of the potatoes by 2.3%～11.8%,while combined application with fertilization could improve the quality of potatoes.The starch and revertose were increased by 0.05～0.04percent point and 0.02～0.03percent point,respectively.