全面了解植物水分利用效率(WUE)研究现状可为未来该领域研究方向的确立和发展趋势预测提供依据。为此,基于Web of Science(WoS)核心合集的科学引文索引数据库,采用VOSviewer文献计量分析软件对植物WUE研究2000-2021年发表的相关文献进...全面了解植物水分利用效率(WUE)研究现状可为未来该领域研究方向的确立和发展趋势预测提供依据。为此,基于Web of Science(WoS)核心合集的科学引文索引数据库,采用VOSviewer文献计量分析软件对植物WUE研究2000-2021年发表的相关文献进行分析。结果表明,1)2000-2021年世界范围内该领域发文数量呈抛物线式增长趋势,载文量较多的期刊有Agricultural Water Management,Field Crops Research,Agricultural and Forest Meteorology等,发文量前3的国家为中国、美国和澳大利亚,发文量前3的机构为中国科学院、西北农林科技大学和中国农业大学,发文量前3的作者为Liu Fulai,Kang Shaozhong,H.Medrano,该领域大多数研究者之间合作关系较少;2)尽管中国学者发文数量最多,但有影响力和高被引用论文数量少;3)目前该领域主要的研究方向可分为3类,植物WUE种间或种内差异的生理或分子机制、灌溉和施肥等田间管理措施对作物WUE的影响与调控、气候变化对陆地生态系统WUE的影响;4)基于关键词热点分析和热点论文分析,给出了未来植物WUE研究需要加强的方面。展开更多
A drought event can cause yield loss or entire crops to fail.In order to study the effects of continuous drought on physiological characteristics,yield,and water use efficiency(WUE)of winter wheat(Triticum aestivum L....A drought event can cause yield loss or entire crops to fail.In order to study the effects of continuous drought on physiological characteristics,yield,and water use efficiency(WUE)of winter wheat(Triticum aestivum L.),the variety“Zhoumai 22”was grown in controlled water conditions of the pot-planted winter wheat under a mobile rainout shelter.Foot planting and safe wintering were used to evaluate,winter wheat under different drought conditions,including light,moderate and severe drought at the jointing,heading,and filling stages.The soil water content was controlled at 60–70%,50–60%,or 40–50%of field capacity.Experimental trials included 3 pre-anthesis drought hardening,3 three-stage continuous drought,and 1 test control conditions.Under drought stress conditions,winter wheat leaf water potential,soil plant analysis development(SPAD),photosynthesis parameters,and yield declined due to pre-anthesis drought hardening.And the degree of decline:continuous drought>pre-anthesis drought hardening.Changes in the post-anthesis photosynthetic capacity of winter wheat were mainly related to the pre-anthesis drought level,rather than post-anthesis rehydration.The threshold of non-stomata limiting factors caused by photosynthesis at the filling stage is 40–50%FC,while comprehensive yield and WUE affected,the yield in severe drought treatments was the most significant,B3C3 and B3C3G3 decreased by 55.68%and 55.88%,respectively.Pre-anthesis drought was the main reason for the decreased crop yield.Thus,severe drought should be avoided during planting,while pre-anthesis light drought is a suitable choice for watersaving and crop production,as proper pre-anthesis drought hardening(60–70%FC)is feasible and effective.展开更多
A field experiment was conducted in a manural loesial soil in middle of Shaanxi Province ofChina, a sub-humid area prone to drought, to study the effects of rainwater-harvestingcultivation on water use efficiency (WUE...A field experiment was conducted in a manural loesial soil in middle of Shaanxi Province ofChina, a sub-humid area prone to drought, to study the effects of rainwater-harvestingcultivation on water use efficiency (WUE) and yield of winter wheat. Ridge-furrow tillage wasused, the ridge being mulched by plastic sheets for rainwater harvesting while seeding in thefurrows. Results showed that from sowing to reviving stage of winter wheat, water stored in 0-100 cm layer was significantly decreased whereas that in 100-200 cm layer did not change.Compared to the non-mulching, plastic mulch retained 6.5 mm more water as an average of the twoN rate treatments, having a certain effect on conservation of soil moisture. In contrast, atharvest, water was remarkably reduced in both the 0-100 cm and the 100-200 cm layers, andmulched plots consumed 34.8 mm more water as an average of the two treatments: low N rate (75kg N ha-1) with low plant density (2 300 000 plants ha-1) and high N rate (225 kg N ha-1)with highplant density (2 800 000 plants ha-1), in 0-200 cm layer than those without mulching, the formerbeing beneficial to plants in utilization of deep layer water. Mulching was significant inharvesting water and in increase of yield. Mulched with plastic sheets, biological and grainyields were 22.5 and 22.6% higher for the average of the high N rate than for the low N rate,and the high N rate with low plant density was 29.8 and 29.1% higher in both biological andgrain yields than that of the low N rate with low plant density. With high N rate and high plantdensity, the mulched biological and grain yields were 39.5 and 28.9% higher than the correspondingtreatments without mulching. Of the treatments, that with high N rate and low plant density wasthe highest in both biological and grain yields, and the water use efficiency reached 43.7 kgmm-1 ha-1 for biological yield and 22 kg mm-1 ha-1 for grain yield, being the highest WUE reportedin the world up to now.展开更多
文摘全面了解植物水分利用效率(WUE)研究现状可为未来该领域研究方向的确立和发展趋势预测提供依据。为此,基于Web of Science(WoS)核心合集的科学引文索引数据库,采用VOSviewer文献计量分析软件对植物WUE研究2000-2021年发表的相关文献进行分析。结果表明,1)2000-2021年世界范围内该领域发文数量呈抛物线式增长趋势,载文量较多的期刊有Agricultural Water Management,Field Crops Research,Agricultural and Forest Meteorology等,发文量前3的国家为中国、美国和澳大利亚,发文量前3的机构为中国科学院、西北农林科技大学和中国农业大学,发文量前3的作者为Liu Fulai,Kang Shaozhong,H.Medrano,该领域大多数研究者之间合作关系较少;2)尽管中国学者发文数量最多,但有影响力和高被引用论文数量少;3)目前该领域主要的研究方向可分为3类,植物WUE种间或种内差异的生理或分子机制、灌溉和施肥等田间管理措施对作物WUE的影响与调控、气候变化对陆地生态系统WUE的影响;4)基于关键词热点分析和热点论文分析,给出了未来植物WUE研究需要加强的方面。
基金This research was jointly funded by the National Nature Science Foundation of China(51779093)the Support Plan for Scientific and Technological Innovation Team of Colleges and Universities in Henan Province(17IRTSTHN026).
文摘A drought event can cause yield loss or entire crops to fail.In order to study the effects of continuous drought on physiological characteristics,yield,and water use efficiency(WUE)of winter wheat(Triticum aestivum L.),the variety“Zhoumai 22”was grown in controlled water conditions of the pot-planted winter wheat under a mobile rainout shelter.Foot planting and safe wintering were used to evaluate,winter wheat under different drought conditions,including light,moderate and severe drought at the jointing,heading,and filling stages.The soil water content was controlled at 60–70%,50–60%,or 40–50%of field capacity.Experimental trials included 3 pre-anthesis drought hardening,3 three-stage continuous drought,and 1 test control conditions.Under drought stress conditions,winter wheat leaf water potential,soil plant analysis development(SPAD),photosynthesis parameters,and yield declined due to pre-anthesis drought hardening.And the degree of decline:continuous drought>pre-anthesis drought hardening.Changes in the post-anthesis photosynthetic capacity of winter wheat were mainly related to the pre-anthesis drought level,rather than post-anthesis rehydration.The threshold of non-stomata limiting factors caused by photosynthesis at the filling stage is 40–50%FC,while comprehensive yield and WUE affected,the yield in severe drought treatments was the most significant,B3C3 and B3C3G3 decreased by 55.68%and 55.88%,respectively.Pre-anthesis drought was the main reason for the decreased crop yield.Thus,severe drought should be avoided during planting,while pre-anthesis light drought is a suitable choice for watersaving and crop production,as proper pre-anthesis drought hardening(60–70%FC)is feasible and effective.
基金part of the projects(49890330,30230230 and 30070429)supported by the National Natural Science Foundation of China(NSFC)project(G1999011707)supported by the National Key Basic Research Support Funds,China(NKBRSF).
文摘A field experiment was conducted in a manural loesial soil in middle of Shaanxi Province ofChina, a sub-humid area prone to drought, to study the effects of rainwater-harvestingcultivation on water use efficiency (WUE) and yield of winter wheat. Ridge-furrow tillage wasused, the ridge being mulched by plastic sheets for rainwater harvesting while seeding in thefurrows. Results showed that from sowing to reviving stage of winter wheat, water stored in 0-100 cm layer was significantly decreased whereas that in 100-200 cm layer did not change.Compared to the non-mulching, plastic mulch retained 6.5 mm more water as an average of the twoN rate treatments, having a certain effect on conservation of soil moisture. In contrast, atharvest, water was remarkably reduced in both the 0-100 cm and the 100-200 cm layers, andmulched plots consumed 34.8 mm more water as an average of the two treatments: low N rate (75kg N ha-1) with low plant density (2 300 000 plants ha-1) and high N rate (225 kg N ha-1)with highplant density (2 800 000 plants ha-1), in 0-200 cm layer than those without mulching, the formerbeing beneficial to plants in utilization of deep layer water. Mulching was significant inharvesting water and in increase of yield. Mulched with plastic sheets, biological and grainyields were 22.5 and 22.6% higher for the average of the high N rate than for the low N rate,and the high N rate with low plant density was 29.8 and 29.1% higher in both biological andgrain yields than that of the low N rate with low plant density. With high N rate and high plantdensity, the mulched biological and grain yields were 39.5 and 28.9% higher than the correspondingtreatments without mulching. Of the treatments, that with high N rate and low plant density wasthe highest in both biological and grain yields, and the water use efficiency reached 43.7 kgmm-1 ha-1 for biological yield and 22 kg mm-1 ha-1 for grain yield, being the highest WUE reportedin the world up to now.
