H. Noor, Khan Shahbaz, Sanaullah, Syed Mushtaq Ahmed Shah, S. Anwar, Sun Min, Gao Zhiqiang
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引用次数: 2
摘要
通过田间试验,研究了4种播种方式对旱地冬小麦生长、光合及产量性状的影响。此外,还评价了不同施氮量对小麦植株土壤耗水量的影响。冬小麦采用宽间距播种(WS)、沟播(FS)、立体播种(SS)和钻播(DS)四种方式播种。结果表明,不同的播种方式对产量和籽粒品质影响显著。与DS相比,WS、FS和SS处理的产量分别提高了25%、17%和11%。从播种到拔节,WS下耗水量最大,且以深土层为主。光合性状和叶面积指数在WS处理下最高,其次是FS处理。DS处理下株高最高。施氮量为210 ~ 240 kg hm -1时,耗水指数和籽粒产量均高于其他施氮量。综上所述,WS和210 kg N ha-1处理改善了冬小麦冠层结构、耗水量和产量。
The combined effect of sowing methods and nitrogen rates on wheat yield and regulation of soil water consumption in Loess Plateau
Field experiments were conducted to assess the effect of four sowing methods on the growth, photosynthetic, and yield traits of dryland winter wheat. Furthermore, the impact of N input rates was also evaluated on water consumption by the wheat plants from the soil. The seeds of winter wheat were sown using wide space sowing (WS), furrow sowing (FS), stereoscopic sowing (SS), and drill sowing (DS). The results indicated that different sowing methods significantly affected the yield and grain quality. The increase in grain yield was 25%, 17%, and 11%, respectively, under WS, FS, and SS compared to that in DS. From sowing to jointing, the water consumption was highest under WS, mainly in deep soil layers. The photosynthetic traits and leaf area index were highest under WS, followed by those under FS. The plant height was highest under DS. The water consumption index and grain yield were higher at the N rate 210-240 kg ha-1 than those at the other N rates applied. In conclusion, the WS and 210 kg N ha-1 improved the canopy structure, water consumption, and winter wheat yield.