[1]陈思怿,李升峰,朱继业.种植密度对小麦根际土壤特性及籽粒产量的影响[J].江苏农业科学,2016,44(04):132-137.
 Chen Siyi,et al.Effects of planting density on rhizosphere soil characteristics and seed yield of wheat[J].Jiangsu Agricultural Sciences,2016,44(04):132-137.
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种植密度对小麦根际土壤特性及籽粒产量的影响()

《江苏农业科学》[ISSN:1002-1302/CN:32-1214/S]

卷:
第44卷
期数:
2016年04期
页码:
132-137
栏目:
遗传育种与耕作栽培
出版日期:
2016-04-25

文章信息/Info

Title:
Effects of planting density on rhizosphere soil characteristics and seed yield of wheat
作者:
陈思怿 李升峰 朱继业
南京大学地理与海洋科学学院,江苏南京 210093
Author(s):
Chen Siyiet al
关键词:
小麦种植密度土壤特性产量生理特性
Keywords:
-
分类号:
S512.1
DOI:
-
文献标志码:
A
摘要:
在大田条件下,以大穗型小麦品种泰农18为试验材料,分别设置不同种植密度A1(100株/m2)、A2(150株/m2)、A3(200株/m2)、A4(300株/m2),研究不同种植密度对小麦根际土壤特性及籽粒产量的影响。结果表明:不同种植密度下,小麦根际土壤含水量、pH值、全盐和电导率均随着生育进程呈逐渐降低趋势,而土壤总孔隙度随着生育进程呈增大趋势;土壤有机碳、全氮、全钾、有效氮和有效磷含量均随着生育进程呈逐渐增加趋势,而土壤全磷没有明显的变化趋势,表明增加种植密度对土壤养分、酶活性及微生物数量表现为一定程度的增加效应,对全磷没有明显影响。不同种植密度下,小麦籽粒产量随着密度的增加呈先增加后降低趋势,当种植密度达到A3时,小麦籽粒产量最高,种植密度超过A3时,小麦籽粒产量急剧降低。由此可知,A3处理为小麦的最佳种植密度,这可能是由于小麦在低密度处理下植株量及根量较小,导致根系分泌物减少;过高种植密度下,由于营养竞争加剧,小麦有效光合能力下降,影响光合产物。A3处理下,小麦群体处于合理的状态下,根系总量较多,地上部生长状况也较良好,因此小麦籽粒产量最高。
Abstract:
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备注/Memo

备注/Memo:
收稿日期:2015-11-06
基金项目:国家社会科学基金重大项目(编号:10ZD&M030);江苏省高校人文社会科学重点项目(编号:2013ZDAM008)
作者简介:陈思怿(1990—),女,江苏南通人,硕士研究生,主要研究方向为植被生态、生态地理。E-mail:Chen_siyi90@126.com。
通信作者:李升峰,副教授,硕士生导师,主要研究方向为生态与环境科学。E-mail:lisf@nju.edu.cn。
更新日期/Last Update: 2016-04-25