NDLI: Leaching of Mineral Nitrogen and Available Phosphorus during Culture of Bareroot Larix olgensis Seedlings under Native Fertilizer Management in Northeastern China

Content Provider	IEEE Xplore Digital Library
Author	Hongxu Wei Chengyang Xu Lvyi Ma Lini Jiang Yuan Chai Zhongkui Jia
Copyright Year	2011
Abstract	In order to study potential contamination risk caused by leaching from bare root seedling nursery to local ground waters, leaching of mineral nitrogen (N) and available phosphorus (P) was quantified in production of bareroot Chang bai larch (Larix olgensis) seedlings, which is a common and economical tree species for afforestation and regeneration in North-eastern China. Experiment with 5 fertilization treatments: 0 (CK), 132 (T1), 326 (T2), 450 (T3), and 652 (T4)kg ha-1 using locally purchased diammonium phosphate was(DAP) as fertilizer (18 % N, 46 % P2O5) was conducted under native management on early April, 2009, followed by 2investigations on July 2 and September 21, 2009 respectively. Significant leaching of both N and P, on 2 investigating dates, across 3 soil layers, under different fertilization treatments was found respectively. Approximately 460 to 630 ka ha-1mineral N and 510 to 800 ka ha-1 available P was leached respectively to soil layers beneath 20 cm in depth, and totally leaching amount rose with the increment of fertilizer doses. Result of nutrient uptake efficiency (NUE) concerning nutrient content in basal soil and fertilizer showed that until September 21 only 15 to 25 % N and 1.5 to 4 % Pap proximately was absorbed by seedlings. Consequently, treatment T1 with 23.76 kg N ha-1 and 60.72 kg P ha-1 applied was concluded to be recommended in its relatively better impacts on leaching reducing, but local fertilizer protocal was essentially suggested to be improved as well.
Starting Page	1247
Ending Page	1252
File Size	193946
Page Count	6
File Format	PDF
ISBN	9781612842783
DOI	10.1109/CDCIEM.2011.538
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2011-02-19
Publisher Place	China
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Ammonium Nitrate Larix olgensis Production Soil Phosphorus Water pollution Minerals Nitrogen Leaching Bareroot seedling Fertilizers
Content Type	Text
Resource Type	Article

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