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요약정보
水肥一体化对玉米根系形态特征及水肥利用效率的影响
Resource Type
Academic Journal
Authors
贾浩南
;
李彬
;
降亚楠
;
李世华
;
王卫华
;
左海维
Source
水利科学与寒区工程 / Hydro Science and Cold Zone Engineering
. 6(10):69-74
Subject
鄂尔多斯高原
根系分析
水肥一体化
水肥利用效率
经济效益分析
Language
Chinese
ISSN
2096-5419
Online Access
Find it @ DONGA
초록
为了探究玉米新品种TK601 在鄂尔多斯高原区适宜的水肥配比,解决农业用水量大和肥料利用率低的问题.试验以玉米根系形态特征和水肥利用效率为研究对象,采用两因素交互试验,利用控制变量的研究方法,得出了在不同灌水量和施肥量的情况下根长、根表面积、根体积和平均直径的变化规律和水肥利用效率的变化规律.玉米根的总根长、总根表面积、总根体积和平均直径这四项指标均在相同灌溉水平下,随着施肥量的增加而增加;在相同施肥水平下,随着灌水量的增加,呈现出先增加后减小的趋势,且均在中水高肥处理处达到最大值;在水肥利用效率中,无论是水分利用效率(WUE)还是氮肥偏生产力(NPFP),也在中水高肥(W2 N3)处理处达到最大值,其值分别为 2.64 kg/m3 和 44.46 kg/kg.适宜的水肥配比为中水高肥(W2 N3)处理,适合在鄂尔多斯高原区进行推广.
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