| 张亚丽.平衡施肥对青海马铃薯产量和品质的影响[J].广东农业科学,2013,40(17):54-56 |
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平衡施肥对青海马铃薯产量和品质的影响 |
| Effects of balanced fertilization on potato yield and quality in Qinghai province |
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| DOI： |
| 中文关键词: 马铃薯 平衡施肥 “3414”试验 |
| 英文关键词: potato balanced fertilization “3414”trial |
| 基金项目: |
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| 摘要点击次数: 1241 |
| 全文下载次数: 476 |
| 中文摘要: |
| 在青海省互助县威远镇进行马铃薯“3414”肥料试验，研究N、P、K不同配比对马铃薯产量和品质的影响。根据产量结果模拟出肥料的产量效应函数为：y=31758.37+6.476N+208.06P-98.82K-2.658NP-2.78PK+0.77NK+0.085N2+6.413P2+0.82K2，F=1.432，推荐马铃薯经济最佳施肥量为：N 113.9 kg/hm2、P2O5 60.9 kg/hm2、K2O 90.3 kg/hm2。不同N、P、K 配比及用量能不同程度地改善马铃薯还原糖、淀粉品质,高氮中磷高钾能促进马铃薯还原糖品质的改善，而低氮中磷中钾能够改善马铃薯淀粉品质。还原糖含量N3P2K3 处理为0.186%，比空白对照降低9.7%，其次为N3P2K2、N2P1K1、N2P2K1 处理，还原糖降低率分别为9.2%、9.2%、8.3%；淀粉含量N0P2K2、N2P1K2处理较高，分别为20.14%、19.67%，比对照分别增加13.1%、10.4%。 |
| 英文摘要: |
| A “3414”field trail was carried out to investigate effects of balanced fertilization on potato yield and quality in Qinghai province. The result showed that equation of fertilizer to potato yield was y =31758.37+6.476N+208.06P-98.82K-2.658NP-2.78PK+0.77NK+0.085N2 +6.413P2 +0.82K2, F =1.432, fertilization recommendation was N 113.9 kg/hm2、袁P2O5 60.9 kg/hm2、K2O 90.3 kg/hm2. Different N, P, K fertilization rates improved potato quality including reducing sugar and starch in different degree. Reducing sugar content was 0.186% in N3P2K3 treatment, which decreased by 9.7% compared with control treatment, it decreased respectively by 9.2%,9.2%,8.3% in N3P2K2,N2P1K1,N2P2K1 treatments compared with control treatment. The starch content was 20.14%,19.67% in N0P2K2,N2P1K2 treatments, which were higher 13.1%,10.4% than in the control treatment. It indicates that high N-medium P-high K fertilization can improve potato reducing sugar quality and low N-medium P-medium K fertilization can improve starch qualith. |
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