Ma Shang-Yu, Yu Zhen-Wen, Wang Dong, Zhang Yong-Li, Shi Yu
Ministry of Agriculture Key Laboratory of Crop Ecophysiology and Farming System, Shandong Agricultural University, Tai'an 271018, Shandong, China.
Ying Yong Sheng Tai Xue Bao. 2012 Sep;23(9):2489-96.
In the wheat growth seasons of 2009 -2010 and 2010-2011, six border lengths of 10, 20, 40, 60, 80 and 100 m were installed in a wheat field to study the effects of different border lengths for irrigation on the water consumption characteristics and grain yield of wheat. The results showed that with the increasing border length from 10 to 80 m, the irrigation amount and the proportion of irrigation amount to total water consumption amount, the water content in 0-200 cm soil layers and the soil water supply capacity at anthesis stage, as well as the wheat grain yield and water use efficiency increased, while the soil water consumption amount and the water consumption amount of wheat from jointing to anthesis stages as well as the total water consumption amount decreased. At the border length of <80 m, the irrigation amount was smaller, and the water content in upper soil layers was lower, as compared with those at the border length of 80 m, which led to the wheat to absorb more water from deeper soil layers, and thus, the total water consumption increased. At the border length of 100 m, the irrigation amount, soil water consumption amount, and total water consumption amount all increased, and, due to the excessive irrigation amount and the uneven distribution of irrigation water when irrigated once, the 1000-grain mass, grain yield, and water use efficiency decreased significantly, which was not conductive to the water-saving and high-yield cultivation.
在2009 - 2010年和2010 - 2011年小麦生长季，在一块麦田设置了10米、20米、40米、60米、80米和100米六种畦长，研究不同畦长灌溉对小麦耗水特性及产量的影响。结果表明，随着畦长从10米增加到80米，灌溉量及其占总耗水量的比例、0 - 200厘米土层含水量和开花期土壤供水能力、小麦籽粒产量和水分利用效率均增加，而土壤耗水量、小麦拔节至开花期耗水量及总耗水量减少。畦长<80米时，与80米畦长相比，灌溉量较小，上层土壤含水量较低，导致小麦从深层土壤吸收更多水分，总耗水量增加。畦长100米时，灌溉量、土壤耗水量和总耗水量均增加，且因单次灌溉量过大、灌溉水分布不均，千粒重、籽粒产量和水分利用效率显著降低，不利于节水高产栽培。
