干旱地区农业研究2016，Vol.34Issue(5)：103-108,6.DOI:10.7606/j.issn.1000-7601.2016.05.16
施磷深度对春玉米干物质及磷积累与转运的影响
Effects of phosphorus placement depth on dry matter and phosphorus accumulation and transfer of spring maize
摘要
Abstract
Zhengdan958 was employed as the experimental material under the condition of earth pillar cultivation , using no phosphorus as control ,to investigate the effects of four phosphorus placement depths including 6 ,12 ,18 cm , and 24 cm ,on the accumulation and transportation of dry matter and phosphorus nutrient in spring maize .The results showed that with the increase of phosphorus depth ,dry matter accumulation amounts and grain yield were increased first and became decreased afterwards ,all reaching the maximum at the 12 cm phosphorus placement depth .For leaf and stem-sheath dry matter translocation amounts and translocation rates ,the contribution rates to grain were all the maxi-mums at the 6 cm phosphorus placement depth .The phosphorus contents and accumulations of organ at the 12 cm phos-phorus placement depth were the maximums .For phosphorus translocation amounts and translocation rates ,the contribu-tion rates to grain at the 6 cm phosphorus placement depth were overall the highest .The phosphorus element partial factor productivity ,absorption and utilization rates were all the maximums at the 12 cm phosphorus placement depth ,reaching significant different levels .It showed that moderately increasing phosphorus placement depths was an effective approach to the improvement phosphorus utilization rate .关键词
春玉米/干物质/磷含量/积累与转运Key words
spring maize/dry matter/phosphorus content/accumulation and translocation分类
农业科技引用本文复制引用
段刚强,杨恒山,张瑞富,毕文波,何冬冬..施磷深度对春玉米干物质及磷积累与转运的影响[J].干旱地区农业研究,2016,34(5):103-108,6.基金项目
国家自然科学基金项目（31360308）；国家粮食丰产科技工程 （）
