Liu Zhongmin,Shan Lun,Deng Xiping,et al.Output Roots Growth and Water Use of Spring-wheat as Affected by Fertilization and Density of Plant[J].Research of Soil and Water Conservation,1998,5(01):70-75.
施肥和密度对春小麦产量根系及水分利用的影响
- Title:
- Output Roots Growth and Water Use of Spring-wheat as Affected by Fertilization and Density of Plant
- 摘要:
- 春小麦是宁夏半干旱区的主要粮食作物，增施肥料和合理密植是提高春小麦产量的主要因素。该项研究是为了探索合理施肥量和种植密度，试验结果表明：合理密植和施肥可有效地达到2250kg/hm2产量水平，需施N90kg/hm2，P2O5135kg/hm2，密度500粒/m2；合理施肥可改善作物性状；施肥对根系的影响主要以耕层0～20cm最大；施肥与水分利用效率是正相关，r为0.894**，而密度与水分利用是显著负相关，r为-0.326。
- Abstract:
- To increase fertilization and density were mainly factors to raise spring-wheat output. This research aimed at studying on the fertilization amount and density rationaly. The results revealed as follows: the rational fertilization and density might increase the crops output effectively, and fertilization presented the positive relationship, with output with correlation coefficient of 0.999**; the rational fertilization amount and density might improve property; the roots amount as affected by fertilization mainly distribute in 0~20cm layer of soil. The fertilization presented the positive relationship with water use efficiency with correlation coefficient of 0.894**, on the contrary, density presented the negative relationship with correlation coefficient of -0.326.
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备注/Memo
收稿日期:1997-10-10。