Multi-site evaluation of plastic film mulch and nitrogen fertilization for wheat grain yield, protein content and its components in semiarid areas of China

作者

Luo, Laichao; Hui, Xiaoli; Wang, Zhaohui; 更多内容

期刊:FIELD CROPS RESEARCH ISSN:0378-4290 , 年:2019 . 卷:240 页码:86-94

语种: English

原文链接:http://dx.doi.org/10.1016/j.fcr.2019.06.002

摘要

High crop yield and high quality are the primarily targets in intensive crop production. Although the plastic film mulch (PFM) approach has been well established for high-yielding wheat production in dryland, effects of PFM on wheat grain quality is still poorly understood. Therefore, multi-site and fixed location field experiments were conducted to investigate effects of PFM on grain yield, protein content and its components content of dryland winter wheat in 2014-2016 in the Loess Plateau of China. Compared with no mulch (NM), PFM increased the grain yield, structural protein contents and the ratio of gliadin/glutenin by 634 kg ha(-1), 11.3%-30.8% and 15.1%, respectively, but reduced the total protein and its gluten contents by 7.8% and 3.4%-15.1%. Furthermore, PFM significantly increased the proportion of albumin, globulin and gliadin to total protein by 22.3%, 44.2% and 5.5%, respectively, but decreased the proportion of glutenin by 7.4%, compared to NM. The highest grain yield, albumin and glutenin content were attained when the critical N rates were 146 kg N ha(-1), 167 kg N ha(-1) and 100 kg N ha(-1), respectively. Moreover, for every 100 kg ha(-1) increase in N fertilizer, the globulin content increased by 0.11%, but the ratio of gliadin/glutenin decreased by 0.12%. In summary, PFM did not show any benefit for gluten, while precise N fertilizer management provided an opportunity for improving grain processing quality of dryland wheat. In order to tradeoff between grain yield and its processing quality, the optimal N application rate (146-167 kg N ha(-1)) should be considered under PFM. These findings suggest that optimal N management serves as a basis for further investigation and regulation of grain protein components of wheat under PFM in the semiarid area of China and similar cropping system around the world.

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关键词
Cultivation pattern; Dryland; Structural protein; Gluten protein; Processing; Quality; Nutrition regulation

附加关键词:
WINTER-WHEAT; USE EFFICIENCY; QUALITY; ACCUMULATION; MANAGEMENT; GENOTYPES; POLYMERS; DRYLAND; STRESS

作者信息

通讯作者:
     Wang, ZH , Northwest A&F Univ, State Key Lab Crop Stress Biol Arid Areas, Yangling 712100, Shaanxi, Peoples R China.
作者机构:
     [1] [ Luo, Laichao; Hui, Xiaoli; Wang, Zhaohui ] Northwest A&F Univ, State Key Lab Crop Stress Biol Arid Areas, Yangling 712100, Shaanxi, Peoples R China.
     [2] [ Luo, Laichao ] Anhui Agr Univ, Sch Resources & Environm, Anhui Prov Key Lab Farmland Ecol Conservat & Poll, Hefei 230036, Anhui, Peoples R China.
     [3] [ Luo, Laichao; Hui, Xiaoli; Wang, Zhaohui; Zhang, Xiang ] Northwest A&F Univ, Coll Nat Resources & Environm, Key Lab Plant Nutr & Agrienvironm Northwest China, Minist Agr, Yangling 712100, Shaanxi, Peoples R China.
     [4] [ Xie, Yinghe; Li, Tingliang ] Shanxi Agr Univ, Coll Resources & Environm, Taigu 030801, Shanxi, Peoples R China.
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