施肥对半干旱区旱地全膜覆土穴播苦荞产量及水肥利用率的影响

doi:10.13304/j.nykjdb.2019.0838

中国农业科技导报 ›› 2020, Vol. 22 ›› Issue (9): 143-152.DOI: 10.13304/j.nykjdb.2019.0838

施肥对半干旱区旱地全膜覆土穴播苦荞产量及水肥利用率的影响

方彦杰,张绪成*,于显枫,侯慧芝,王红丽,马一凡

甘肃省农业科学院旱地农业研究所, 甘肃省旱作区水资源高效利用重点实验室, 兰州 730070

收稿日期:2019-10-14 出版日期:2020-09-15 发布日期:2019-11-14
通讯作者: *通信作者张绪成 E-mail：gszhangxuch@163.com
作者简介:方彦杰 E-mail：fangyj82@126.com；
基金资助:
国家自然科学基金资助项目（31760367）；甘肃省农业科学院农业科技创新专项重点研发计划项目（2019GAAS10）；甘肃省农业科学院农业科技创新专项学科团队项目（2017GAAS27）。

Impacts of Fertilization on Yield and Water-fertilizer Use Efficiency of Tartary Buckwheat with Whole Field Soil-plastic Mulching in Semiarid Area

FANG Yanjie, ZHANG Xucheng*, YU Xianfeng, HOU Huizhi, WANG Hongli, MA Yifan

Key Laboratory of High Efficiency Water Utilization in Dryland Farming of Gansu Province, Institute of Dryland Agriculture, Gansu Academy of Agricultural Sciences, Lanzhou 730070, China

Received:2019-10-14 Online:2020-09-15 Published:2019-11-14

摘要/Abstract

摘要： 为探明不同氮、磷、钾肥配比对全膜覆土穴播苦荞产量和水肥利用率的影响，以云荞2号为试验材料，研究在不同施肥量配比条件下，苦荞生物量、产量、收获指数、0~300 cm土层土壤贮水量、耗水量、水分利用效率、肥料利用效率、休闲效率等指标的变化，分析施肥量对产量及水肥利用效率的影响。结果表明：2015—2017年，低量施肥处理产量和生物量均表现为最高，产量增加1.1%~30.5%、生物量增加1.1%~194%。2015和2016年生育期降水利用效率、休闲期降水利用效率和年降水利用效率表现为低量施肥>不施肥>中量施肥>高量施肥，2017年表现为低量施肥>中量施肥>不施肥>高量施肥。2015和2017年水分利用效率表现为低量施肥最高，3年肥料农学效率和肥料偏生产力均表现为低量施肥>中量施肥>高量施肥。综上，低量施肥处理能够增加苦荞产量和生物量，提高水分利用效率和收获指数，明显增加肥料农学效率和肥料偏生产力，且低量施肥处理能够根据降水年型及生育期内耗水量的高低调控休闲期土壤水分，增强休闲期土壤水分恢复力，提高休闲效率和降水利用效率。研究结果可为半干旱区旱地全膜覆土穴播苦荞栽培中合理施肥提供理论依据。

关键词: 苦荞, 全膜覆土穴播, 施肥, 水分利用效率, 肥料利用效率

Abstract: To explore the effects of different rates of N, P2O5, and K2O fertilizers on yields and water-fertilizer use efficiency, taking a tartary buckwheat \[Fagopyrum tataricum (L.) Gaertn.\] cultivar Yunqiao 2 as experimental materials, this paper investigated the changes of tartary buckwheat biomass, yield, harvest index (HI), soil water storage in 0~300 cm soil layers, water consumption, water use efficiency (WUE), fertilizer use efficiency and fallow efficiency, and analyzed the effects of fertilizer application rates on the yield water and fertilizer efficiency. The results showed that: yield and biomass were highest at low fertilizer rate (LF), with an increase of yield by 1.1%~30.5%, and an increase of biomass by 1.1%~19.4%. In 2015 and 2016, the order of the precipitation use efficiency (PUE) in the growth period, the PUE in the fallow period and the annual precipitation use efficiency were as follows: low fertilizer rate (LF)> no fertilization (CK) > medium fertilizer rate (MF) > and high fertilizer rate(HF), but LF> MF>CK>HF during 2017, respectively. WUE was highest with LF treatment compared to the other treatments in 2015 and 2017. In the three consecutive years, the order of fertilizer agronomic efficiency (AE), and partial factor productivity was LF>MF>HF. Overall, under the current experimental condition, LF treatment increased tartary buckwheat yield, biomass, WUE, as well as HI. At the meantime, AE and PFP were significantly increased by LF, compared to MF and HF, respectively. Also, LF was able to regulate soil water storage in fallow periods according to different precipitation years and water consumption, enhance soil moisture recovery in fallow periods, and improve fallow efficiency, as well as PUE. The results provided a theoretical basis for reasonable fertilizer rates in the cultivation of hole-sown tartary buckwheat with whole film mulching in semiarid area.

Key words: tartary buckwheat, whole field soil-plastic mulching, fertilization, water use efficiency, fertilizer use efficiency

方彦杰,张绪成*,于显枫,侯慧芝,王红丽,马一凡. 施肥对半干旱区旱地全膜覆土穴播苦荞产量及水肥利用率的影响[J]. 中国农业科技导报, 2020, 22(9): 143-152.

FANG Yanjie, ZHANG Xucheng*, YU Xianfeng, HOU Huizhi, WANG Hongli, MA Yifan. Impacts of Fertilization on Yield and Water-fertilizer Use Efficiency of Tartary Buckwheat with Whole Field Soil-plastic Mulching in Semiarid Area[J]. Journal of Agricultural Science and Technology, 2020, 22(9): 143-152.

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施肥对半干旱区旱地全膜覆土穴播苦荞产量及水肥利用率的影响

Impacts of Fertilization on Yield and Water-fertilizer Use Efficiency of Tartary Buckwheat with Whole Field Soil-plastic Mulching in Semiarid Area

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