img

官方微信

高级检索

中国沙漠 ›› 1999, Vol. 19 ›› Issue (s1): 88-91.

• 论文 • 上一篇    下一篇

沙质农田玉米生产力的形成与土壤环境关系的研究

赵哈林1, 赵学勇1, 张铜会1, 李玉霖1, 周瑞莲2   

  1. 1. 中国科学院兰州沙漠研究所, 兰州 730000;
    2. 兰州大学国家干旱农业重点实验室, 兰州 730000
  • 出版日期:1999-12-31 发布日期:1999-12-31
  • 通讯作者: 周瑞莲
  • 基金资助:
    本文得到96-920-13-02、49890330、980121、KE-952-91-218、KE-95 T-04-01-04项目的资助

Relation between Productivity Formation of Corn and Soil Environment in Sandy Farmland

ZHAO Ha-lin1, ZHAO Xue-yong1, ZHANG Tong-hui1, LI Yu-lin1, ZHOU Rui-lian2   

  1. 1. Institute of Desert Research, Chinese Academy of Sciences, Lanzhou 730000, China;
    2. State Key Lab of Arid Agroecology of Lanzhou University, Lanzhou 730000, China
  • Online:1999-12-31 Published:1999-12-31

摘要: 结果表明:(1)在科尔沁沙地,五种主要类型农田生长季平均土壤含水量是粘壤土水浇地(ICL,12.4%) > 沙壤土水浇地(ISL,9.5%) > 粘壤土旱坡地(CLDSL,8.87%) > 粘壤土旱平地(CLDL,6.55%) > 沙壤土旱平地(SLDL,5.70%),地温是SLDL(22.04℃) > CLDL(21.73℃) > CLDSL(21.40℃) > ISL(21.08℃) > ICL(21.05℃),土壤养分综合指数高低的顺序是ICL(90.8) > ISL(83.8) > CLDL(75.8) > CLDSL(55.0) > SLDL(36.8);(2)五种类型农田玉米植株高(cm)和生物量(kg·m-2)都是ISL(270,2.96) > ICL(245,2.70) > CLDSL(225,2.12) > CLDL(220,1.86) > SLDL(181,1.32);(3)玉米地上生物量与土壤速效N、P、K的相关系数为0.860,与土壤水分的相关系数为0.837,与土壤有机质含量的相关系数为0.753,而与地温的相关系数为-0.976。

关键词: 沙质农田, 玉米, 生产力, 土壤环境

Abstract: Average soil water content during the growth period of corn in the 5 main typical croplands in Horqin Sandy Land follows order: irrigated clay loam (ICL, 12.4%) > irrigated sandy loam (ISL, 9.50%) > clay loam dry slop land (CLDSL, 8.87%) > clay loam dry land (CLDL, 6.55%) > sandy loam dry land (SLDL, 5.70%); Average soil temperature follows order: SLDL(22.04℃) > CLDL(21.73℃) > CLDSL(21.40℃) > ISL(21.08℃) > ICL(21.05℃); Comprehensive index of soil nutrient follows order: ICL(90.8) > ISL(83.8) > CLDL(75.8) > CLDSL(55.0) > SLDL(36.8). (2) Both height (cm) and biomass (kg·m-2) of corn were ISL(270, 2.96) > ICL(245, 2.70) > CLDSL(225, 2.12) > CLDL(220, 1.86) > SLDL(181, 1.32). (3) Correlation coefficients between the biomass and soil indexes follow order: quick acting N、P、K(R=0.860) > soil moisture (R=0.837) > soil organic matter (R=0.753) > soil temperature (R=-0.976)

Key words: Sandy farmland, Corn, Productivity, Soil environment

中图分类号: