作物学报2016，Vol.42Issue(4)：619-623,5.DOI:10.3724/SP.J.1006.2016.00619
氮素形态及供应时期对马铃薯生长发育与产量的影响
Effects of Nitrogen Form and Its Application Time on Plant Growth and Tuber Yield of Potato
摘要
Abstract
The effects of nitrogen form on potato plant growth, tuber formation and tuber yield were studied under sand cultural condition using cultivars Kexin 1 and Favorita in 2013 and 2014. The results showed that there were no significantly different influences on plant height, leaf area, leaf SPAD value, plant dry matter accumulation and tuber weight when applied nitrite (NO3-N) or ammonia (NH4-N) before tuberization. However, there were higher leaf SPAD value, faster plant growth and higher tuber yield under application of NH4-N after tuberization compared with that of NO3-N. The plants treated with NO3-N before tuber initiation produced more tubers per plant than those treated with NH4-N. Moreover, no significant effect was detected on tuber dry matter distribution under different forms of nitrogen applied. Thus, potato nitrogen management including N fertilizer form and its application time should be adjusted according to the aim of commercial potato production or seed potato propagation.关键词
马铃薯/氮素形态/供应时期/生长发育/产量Key words
Potato/N form/Application time/Growth/Yield引用本文复制引用
苏亚拉其其格,秦永林,贾立国,樊明寿..氮素形态及供应时期对马铃薯生长发育与产量的影响[J].作物学报,2016,42(4):619-623,5.基金项目
本研究由国家自然科学基金项目(31160411)和内蒙古重大专项“马铃薯种薯繁育与商品薯生产中资源高效利用技术的创新”项目资助。This study was supported by the National Natural Science Foundation of China (31160411), Inner Mongolia Major Special Project“Innova-tion of Resource Use Efficiency Improvement Technology during Seed Potato Propagation and Commercial Potato Production” （31160411）
