Qin Shu-Hao, Zhang Jun-Lian, Wang Di, Pu Yu-Lin
College of Agronomy, Gansu Agricultural University, Lanzhou 730070, China.
Ying Yong Sheng Tai Xue Bao. 2009 Nov;20(11):2665-70.
Field experiments were conducted to study the effects of limited supplemental irrigation with catchment rainfall on the growth of potato cultivars Daxiyang and Tongshu 23 in rainfed areas of western Loess Plateau. Supplemental irrigation with catchment rainfall at seedling stage increased the potato yield significantly, and the increment was higher for Daxiyang than for Tongshu No. 23. Supplemental irrigation at tuber expanding stage increased the yield of Tongshu 23, but decreased the yield of Daxiyang. Low amount of supplemental irrigation (45 mm) increased the water use efficiency (WUE) and irrigation water use efficiency (IWUE) of Tongshu 23. For Daxiyang, its WUE and IWUE were higher when the supplemental irrigation was made at seedling stage than at tuber expanding stage. Supplemental irrigation increased the tuber yield and the percentages of bigger and medium tubers of Tongshu 23, but the percentages of green and blet tubers were also increased. As for Daxiyang, supplemental irrigation increased the percentages of bigger and smaller tubers, as well as the percentage of blet tuber.
在黄土高原西部雨养区开展田间试验，研究集雨补灌对马铃薯品种大西洋和通薯23生长的影响。苗期进行集雨补灌显著提高了马铃薯产量，大西洋的增幅高于通薯23。块茎膨大期补灌提高了通薯23的产量，但降低了大西洋的产量。少量补灌（45毫米）提高了通薯23的水分利用效率（WUE）和灌溉水利用效率（IWUE）。对于大西洋，苗期补灌时其WUE和IWUE高于块茎膨大期补灌。补灌提高了通薯23的块茎产量以及大中薯率，但绿薯和烂薯率也有所增加。对于大西洋，补灌增加了大薯率和小薯率以及烂薯率。
