Varied previous crops on improving oilseed flax productivity in semiarid Loess Plateau in China  

作　　者：Bangqing Zhao Yuhong Gao Bin Yan Zhengjun Cui Haidi Wang Zhi Cao 

机构地区：[1]Gansu Provincial Key Laboratory of Aridland Crop Science,Gansu Agricultural University,Lanzhou,China [2]College of Agronomy,Gansu Agricultural University,Lanzhou,China

出　　处：《Oil Crop Science》2020年第4期187-193,共7页中国油料作物学报(英文版）

基　　金：This study was supported by Gansu Provincial Key Laboratory of Aridland Crop Science of Gansu Agricultural University(GSCS-2020-Z6);the China Agriculture Research System of Construct Special(CARS-14-1-16);the National Natural Science Programs of China(31660368,32060437);the Fuxi Outstanding Talent Cultivation Plan of Gansu Agriculture University(Gaufx-02J05).I am very grateful to all my working partners.

摘　　要：To investigate the effects of crop rotation on oilseed flax growth and yield,three season experiments were carried out in semi-arid area of Dingxi,Gansu from 2017 to 2019.The designed 6 rotational systems were FFF(flax-flaxflax),PFF(potato-flax-flax),WPF(wheat-potato-flax),FPF(flax-potato-flax),PWF(potato-wheat-flax)and FWF(flax-wheat-flax).Flax growth and yield investigation results showed that crop rotation increased leaf area duration,dry matter accumulation,seed nitrogen accumulation,water and nitrogen used efficiency,compared with continuous cropping of flax.Flaxseed yields in rotation systems were 22.23%–44.11%greater than those of continuous cropping system.Those in wheat and potato stubbles had higher tiller number(21.43%and 29.46%),more branches(14.24%and 6.97%),effective capsules(26.35%and 28.79%),higher water use efficiency(40.26%and 33.5%),higher nitrogen partial factor productivity(33.85%and 31.46%)and dry matter(41.98%and 25.47%)than those in oilseed flax stubble.It concluded that crop rotation system was an effective measure for oilseed flax productivity in semi-arid area by improving yield components and promoting biomass.

关 键 词：Crop rotation LINSEED Grain yield Water use efficiency Nitrogen partial factor productivity 

分 类 号：S563.2[农业科学—作物学] S512.1S532