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首页> 外文期刊>Journal of Agronomy and Crop Science/Zeitschrift fur acker-und pflanzenbau >Effect of deficit irrigation scheduling and planting pattern on leaf water status and radiation use efficiency of winter wheat
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Effect of deficit irrigation scheduling and planting pattern on leaf water status and radiation use efficiency of winter wheat

机译：缺陷灌溉调度与种植模式对冬小麦叶水状况及辐射利用效率的影响

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摘要

Drought and water shortages have always been great challenges for agricultural production in the North China Plain. To explore appropriate irrigation regimes and planting patterns in this area, a field experiment was conducted for winter wheat (Triticum aestivum L.) from 2014 to 2016. Three irrigation treatments of 50 mm irrigation at growth stage of jointing (GS34) and heading (GS48, W1), 100 mm irrigation at GS34 (W2) and 100 mm irrigation at GS34 and GS48 (W3) combined with uniform (U), double-double (DD) and furrow-ridge (F) planting patterns were designed. The tillers number, leaf water status, spike characteristics and radiation use efficiency (RUE) were measured. Results showed that compared with W2, W3 significantly reduced leaf abscisic acid (ABA) content and increased tillers number, spikelets spike(-1), yield components and RUE, while W1 produced more tillers number, leaf relative water content (LRWC) and water potential (L psi) only in the late growth stage, yield components and RUE. The DD significantly increased tillers number, LRWC, L psi, leaf osmotic potential, spike length, spikes m(-2), grains spike(-1) and RUE, and reduced the ABA content compared with U. Considering the serious water shortage in the North China Plain, 50 mm irrigation at jointing and heading stages combined with DD is a worthy cultivation measure for sustainable agriculture at water-deficit condition.
机译：干旱和缺水一直是华北平原农业生产面临的巨大挑战。为了探索该地区适宜的灌溉制度和种植模式，2014年至2016年对冬小麦（Triticum aestivum L.）进行了田间试验。设计了拔节期（GS34）和抽穗期（GS48，W1）50mm灌水、GS34期（W2）100mm灌水、GS34和GS48期（W3）100mm灌水三种灌水处理，并结合均匀（U）、双双双（DD）和沟垄（F）种植模式。测定了水稻分蘖数、叶片水分状况、穗部性状和辐射利用效率。结果表明，与W2相比，W3显著降低了叶片脱落酸（ABA）含量，增加了分蘖数、小穗数（-1）、产量构成因素和RUE，而W1仅在生育后期、产量构成因素和RUE产生了更多的分蘖数、叶片相对含水量（LRWC）和水势（L psi）。与美国相比，DD显著增加了分蘖数、LRWC、L psi、叶片渗透势、穗长、穗m（-2）、穗粒（-1）和RUE，并降低了ABA含量，拔节期和抽穗期50 mm灌溉与DD相结合，是在缺水条件下实现可持续农业的一种有价值的栽培措施。

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