Relationships of water conservation through mulching in fallow period with wheat nitrogen transportation and crop yield in dryland

Field experiments were carried out to study the effects of different mulching times (30 or 60 d after previous wheat harvest) and mulching methods (whole-mulching, half-mulching and no- mulching) on wheat plant N absorption and assimilation after deep plowing in fallow period on dryland. The results...

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Bibliographic Details
Published inYing yong sheng tai xue bao Vol. 27; no. 1; p. 117
Main Authors Zhang, Meng, Sun, Min, Gao, Zhi-qiang, Zhao, Hong-mei, Li, Guang, Ren, Ai-xia, Hao, Xing-yu, Yang, Zhen-ping
Format Journal Article
LanguageChinese
Published China 01.01.2016
Subjects
Agriculture - methods
Conservation of Natural Resources - methods
Edible Grain
Nitrogen - analysis
Plant Leaves
Plant Stems
Soil
Triticum
Water
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Summary:Field experiments were carried out to study the effects of different mulching times (30 or 60 d after previous wheat harvest) and mulching methods (whole-mulching, half-mulching and no- mulching) on wheat plant N absorption and assimilation after deep plowing in fallow period on dryland. The results showed that mulching improved water storage efficiency in fallow period and soil water storage of 0-300 cm at sowing stage significantly. Mulching in fallow period, especially the whole-mulching, increased the N accumulation amount of each growth stage, N translocation amount and rate before anthesis (NABA) , and N accumulation amount after anthesis (NAAA) and grain N. Yield, N uptake efficiency (NUPE), N partial factor productivity (NPFP) and N harvest index (NHI) were all significantly increased under mulching, and whole-mulching had better effects. Mulching at 30 d after previous wheat harvest significantly increased the soil water storage of 0-300 cm at sowing stage and the water storage efficiency in fallow p
ISSN:1001-9332