Accumulation and distribution characteristics of biomass and nitrogen in bitter gourd (Momordica charantia L.) under different fertilization strategies
文献类型： 外文期刊
作者： Zhang, Baige 1 ; Li, Mingzhu 1 ; Li, Qiang 2 ; Cao, Jian 1 ; Zhang, Changyuan 1 ; Zhang, Fusuo 3 ; Song, Zhao 1 ; Chen, X 1 ;
作者机构： 1.Guangdong Acad Agr Sci, Vegetable Res Inst, Guangzhou, Guangdong, Peoples R China
2.Foshan Res Inst Agr Sci, Foshan, Peoples R China
3.China Agr Univ, Coll Resources & Environm Sci, Ctr Resources Environm & Food Secur, Beijing, Peoples R China
4.Southwest Univ, Coll Resources & Environm, Chongqing, Peoples R China
关键词： bitter gourd; N fertilization; accumulation and distribution; biomass
期刊名称：JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE （ 影响因子：3.638； 五年影响因子：3.802 ）
ISSN： 0022-5142
年卷期： 2018 年 98 卷 7 期
页码：
收录情况： SCI
摘要： BACKGROUNDThe elemental uptake and allocation patterns of crops create insight for nutrient management. Two-year field experiments were conducted to determine the growth and nitrogen (N) uptake patterns of bitter gourd and to evaluate different N management strategies. Two N practices during the nursery stage, namely the conventional fertilizer method (Scon) and the controlled-release fertilizer management method (Scrf), combined with three N management strategies after transplanting, namely zero N fertilizer application (Nno), the conventional strategy (Ncon) and the systematic N management strategy (Nopt), were assessed. RESULTSAveraged over two years, the Scrf-Nopt treatment performed best, producing 33.1t ha(-1) fruit yield with 310kg N ha(-1), indicating that the yield was 22.6% greater by using 18.8% less fertilizer N than in the Scon-Ncon treatment. The Scrf-Nopt treatment facilitated plant growth by accumulating 20.0% more total dry weight and prioritized its allocation to productive organs (57.2%), while the Scon-Ncon strategy was biased toward leaves (56.3%) over fruits (43.8%). Nitrogen uptake and distribution closely followed the pattern of biomass. CONCLUSIONThe Scrf-Nopt fertilization strategy coordinated the important role that N plays in total accumulation and well proportion of biomass and N in bitter gourd developmental processes. (c) 2017 Society of Chemical Industry
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