华北农学报2016，Vol.31Issue(6)：192-198,7.DOI:10.7668/hbnxb.2016.06.030
密植条件下玉米干物质和氮及磷养分积累与分配特点
Characteristics of Dry Matter, Accumulation and Distribution of N and P of Spring Maize in Dense Conditions
摘要
Abstract
The aim of this study is to investigate characteristics of dry matter and nitrogen (N) and phosphorus (P) nutrient accumulations and distributions of spring maize.In this study,the distribution characteristics of dry matter and nitrogen and phosphorus accumulation of spring maize were studied by using KW2,KWS9384 and JD32 as test materials in 2014-2015.The results showed that per plant dry matter,nitrogen and phosphorus accumulation of the KW2 respectively for 432.95,4.90,5.21 g in growth period,were significantly higher than the KWS9384 and JD32,compared with the KWS9384,the dry matter and N and P nutrient accumulation amounts of KW2 increased by 15.11％,11.36％ and 10.15％,respectively.Compared with the JD32,the dry matter and N and P nutrient accumulation amounts of KW2 increased by 17.55％,27.94％ and 28.96％,respectively.The KW2 grain yield and whole plant dry matter and N and P,nutrient accumulation were higher than the KWS9384 and JD32 in the whole growth period,harvest index among the three had no significant difference.The KW2 grain and root nitrogen and phosphorus in dry matter (N and P) was higher than KWS9384 and JD32.Comprehensive analysis showed that the KW2 was most suitable in the density 67 500 plant/ha under cultivation of the 3 spring maize varieties.关键词
春玉米/干物质积累/氮养分积累/磷养分积累Key words
Spring maize/Dry matter accumulation/Nitrogen accumulation/Phosphorus accumulation分类
农业科技引用本文复制引用
张小娟,郑敏娜,郭凤琴..密植条件下玉米干物质和氮及磷养分积累与分配特点[J].华北农学报,2016,31(6):192-198,7.基金项目
山西省科技攻关项目(20150311002-1) （20150311002-1）
山西省农业科学院育种基础项目(Yyzjc1401) （Yyzjc1401）
