[J].HEILONGJIANG AGRICULTURAL SCIENCES,2020,(09):42-46.[doi:10.11942/j.issn1002-2767.2020.09.0042]
黑龙江省马铃薯氮肥适宜用量研究
- 文献标志码:
- A
- 摘要:
- 为促进黑龙江省马铃薯产业发展,2017-2018年分别在黑龙江省马铃薯主产区克山县和赵光农场进行马铃薯氮肥用量定位试验。设置养分专家系统推荐施肥处理(NE),在NE处理的基础上,不施氮肥处理(NE-N)、减少氮肥50%处理(NE-50%N)、减少氮肥25%处理(NE-25%N)、增加氮肥25%处理(NE+25%N)和增加氮肥50%处理(NE+50%N),研究不同施氮量处理对马铃薯产量、养分回收率以及经济效益的影响。结果表明:养分专家系统推荐施肥处理(NE)的氮肥回收率和农学效率均高于其他的氮肥处理。初步得出在黑龙江省马铃薯主产区氮肥的适宜用量为175~201 kg?hm-2。
参考文献/References:
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备注/Memo
收稿日期:2020-05-25