期刊论文

Effect of Planting Density on Water Consumption Characteristics of Maize in Oasis Irrigation Area

Chai, Q.

中文

作物学报

Acta Agronomica Sinica

0496-3490

2017

43

9

1347-1356

10.3724/SP.J.1006.2017.01347

国家公益性行业(农业)科研项目(201503125-3);国家自然科学基金项目(31360323)资助. This study was supported by the Special Fund for Agro-scientific Research in the Public Interest(201503125-3);the National Natural Science Foundation of China(31360323)

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针对水资源不足严重制约绿洲灌区玉米生产,密植对玉米耗水特性影响研究薄弱,以及生产实践中缺乏调控种植密度以同步提高产量和水分利用效率的理论依据等问题, 2012-2015年,以先玉335为参试品种,在相同施肥、灌水制度下,设75 000株 hm~(-2)(低, D1)、87 000株 hm~(-2)(中, D2)、99 000株 hm~(-2)(高, D3) 3个密度水平,探讨密度对玉米耗水的时间动态、耗水结构以及利用效率的影响,以期为优化密植增产节水技术提供理论依据。结果表明,随密度增大,玉米全生育期总耗水量(ET)增大,大喇叭口期至吐丝期是耗水量增大的主要时期,高、中密度处理与低密度处理相比,全生育期总耗水量4年平均分别高22.8%、14.4...

In oasis irrigation agricultural region, water resources deficit is one of the most serious constraints for crop production. However, the insufficient academic support for how compact planting affecting crop water consumption has led to a great short slab on increasing yield and water use efficiency (WUE) simultaneously through the regulation of plant density in practices. Under the same fertilization and irrigation level, a field experiment was carried out in 2012-2015 in order to investigate the water consumption characteristics, yield and water use efficiency of maize under different densit...