Effects of irrigation and nitrogen management on hybrid maize seed production in north-west China

2016年第3卷第1期

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《农业科学与工程前沿（英文）》 >> 2016年第3卷第1期 doi: 10.15302/J-FASE-2016091

Effects of irrigation and nitrogen management on hybrid maize seed production in north-west China

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1. Center for Agricultural Water Research in China, China Agricultural University, Beijing 100083, China.2. College of Agriculture, Guangxi University, Nanning 530005, China

录用日期： 2016-04-01 发布日期：2016-04-07

摘要

Scientific irrigation and nitrogen management is important for agricultural production in arid areas. To quantify the effect of water and nitrogen management on yield components, biomass partitioning and harvest index ( ) of maize for seed production with plastic film-mulching, field experiments including different irrigation and N treatments were conducted in arid north-west China in 2013 and 2014. The results indicated that kernel number per plant ( ) was significantly affected by irrigation and N treatments. However, 100-kernel weight was relatively stable. Reducing irrigation quantity significantly increased stem partitioning index ( ) and leaf partitioning index ( ), and decreased ear partitioning index ( ) at harvest, but lowering N rate (from 500 to 100 kg N·hm ) did not significantly reduce , , and at harvest. was significantly reduced by reducing irrigation quantity, but not by reducing N rate. Linear relationships were found between , , , at harvest and and evapotranspiration ( ).

关键词

yield components ; biomass partitioning ; harvest index ; irrigation ; nitrogen ; maize for seed production

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