作物学报2018，Vol.44Issue(6)：886-896,11.DOI:10.3724/SP.J.1006.2018.00886
覆膜栽培对旱地小麦籽粒产量及硫含量的影响
Effects of Plastic Film Mulching on Grain Yield and Sulfur Concentration of Winter Wheat in Dryland of Loess Plateau
摘要
Abstract
Plastic film mulching is popular in dryland wheat production in China and important to understand to effects on grain yield, sulfur (S) accumulation and remobilization, and grain S concentration in high-yield and nutritional-quality wheat production. In the 2014–2015 and 2015–2016 growing seasons, we carried out field experiments in seven locations of three provinces in Northwest China to compare the biomass, grain yield, yield components, grain S concentration, and S uptake and distribution of winter wheat between conventional flat cropping pattern (no mulching) and the ridge mulch with furrow seeding or flat mulching cropping pattern (plastic film mulching). Compared with no mulching pattern, the plastic film mulching pattern showed 13.7% increase of grain yield through higher spike number, but 9.0% decrease of grain S concentration. The S accumulation in stem and leaf, ear, and aboveground plant parts at anthesis increased by 19.9%, 16.1%, and 19.2%, respectively, in plastic film mulching pattern than in no mulching pattern; however, the S remobilization amount and efficiency increased by 36.2% and 17.9%, respectively, during grain filling. Under plastic film mulching pattern, soil available S at anthesis stage decreased by 24.5%, and the S uptake during grain filling greatly declined by 77.9%. As a result, no significant increases in S accumulation of aboveground plant parts at maturity and S harvest index. The grain S concentration decreased owing to the increased grain yield. Therefore, under plastic film mulching pattern in Northwest China, additional S fertilizer should be applied for improving S nutrition and processing quality in dryland wheat.关键词
旱地/地表覆盖/硫素吸收/硫素累积/硫素转运与分配/籽粒品质Key words
dryland/soil surface management/sulfur uptake/sulfur accumulation/sulfur remobilization and distribution/grain quality引用本文复制引用
罗来超,王朝辉,惠晓丽,张翔,马清霞,包明,赵岳,黄明,王森..覆膜栽培对旱地小麦籽粒产量及硫含量的影响[J].作物学报,2018,44(6):886-896,11.基金项目
本研究由国家公益性行业(农业)科研专项(201303104)和国家现代农业产业技术体系建设专项(CARS-3)资助. This study was supported by the Special Fund for Agro-scientific Research in the Public Interest of China (201303104) and the China Agriculture Research System (CARS-3). （农业）
