植物营养与肥料学报2017，Vol.23Issue(5)：1387-1393,7.DOI:10.11674/zwyf.16379
底肥分层条施提高冬小麦干物质积累及产量
Basal fertilization in strips at different soil depths to increase dry matter accumulation and yield of winter wheat
摘要
Abstract
[Objectives]The effect of basal fertilizer layered at different soil depths and in stripes with different proportion on the dry matter accumulation and yield of winter wheat was studied in this paper, in order to provide a theoretical basis for reasonable fertilizer application in topsoil.[Methods]A 2-year field study was carried out from 2014 to 2016. Five treatments were set up: no basal fertilizer (T1); basal fertilizer was applied in stripes in 8 cm depth (T2), 16 cm (T3) and 24 cm (T4); basal fertilizer was divided into three parts with the proportion of 1:2:3 and applied in stripes of 8, 16 and 24 cm depths of soil (T5). All the treatments were top-dressed with the same amount of nitrogen fertilizer in jointing stage. The growth and nutrient use efficiency in the key growing stages of wheat were investigated.[Results]Among treatments of T2, T3 and T4, the tiller and ear number of winter wheat were reduced with the increase of fertilization depth, but the grain number per spike was significantly increased; the dry matter assimilation after the anthesis and the allocation amount of dry matter in different organs at the maturity were improved; the grain yields were increased, although the redistribution of dry matter from vegetative organs to grain after the anthesis were restrained. Compared to T4, the grain number per spike and 1000-grain weight were not significantly increased in T5, while the tillers and the ear number were increased significantly; the amount of dry matter accumulation and grain yield were significantly increased as well.[Conclusions]Layered and in proportion basal fertilization could increase ear number, the grain number per spike and 1000-grain weight, which coordinates the relationship between the dry matter assimilation and the dry matter redistribution from vegetative organs to grains after the anthsis. Therefore, optimizing the distribution of nutrient in the whole root layer of soil could regulate nutrient supply at each growth stage of winter wheat, thus lead to high yield.关键词
冬小麦/分层施肥/干物质积累与分配/籽粒产量Key words
winter wheat/separated-layer fertilization/dry matter accumulation and distribution/grain yield引用本文复制引用
温樱,王东..底肥分层条施提高冬小麦干物质积累及产量[J].植物营养与肥料学报,2017,23(5):1387-1393,7.基金项目
公益性行业(农业)科研专项经费项目(201503130) （农业）
国家自然科学基金项目(31271660) （31271660）
山东省农业重大应用技术创新课题资助. （）
