摘要： 在全生育期防止天然降雨和人工控制灌水条件下,对豫麦 34号和洛阳 8716开花后不同水分处理的水分利用特性及产量进行了研究。结果表明,花后7～27d随灌水次数增多耗水量增大,水分利用率下降;耗水高峰期发生在开花期至花后 14d,以后逐渐下降花后6d至成熟期间豫麦34号和洛阳 8716耗水量分别占总耗水量的 33%～35 %和 27%～30 % 花后 7～14d灌水,千粒重和产量增加明显。豫麦34号水分利用效率较高,生育后期节水灌溉下仍能发挥其高产潜力;要提高洛阳 8716的产量,应注意保持开花后的土壤水分含量。
关键词:
冬小麦,
水分调控,
生育后期,
水分利用特性
Abstract: Under conditions of shielding natural precipitation,the effcts is of water control on cultivar Yumai No.34 and Luoyang 8716 was studied. Results indicated that:in 7-27d after anthesis,the more amount of irrigation water, the higher of water consumption, meanwhile,water use efficiency declined the water consumption peak of later stage happened between period of anthesis and 14d after anthesis,the average water consumption rate was 5 mm every day,then dedined;the percentage of water consumption between 6d after anthesis and maturity stage to the total water consumption w as high,it was 33%-35% for Yumai No. 34 and 27%-30% for Luoyang 8716 irrigation in 7-14d aftter anthesis increased thousand kernel weight and yield obviously,but that of 21-28 d after anthesis was not,irrigation at 28d after anthesis, the yield was smaller than that of ck;water use efficiency of early-ripe cultivar Yumai No.34 was higher than that of late-ripe cultivar Luoyang 8716; water saving irrigation made Luoyang 8716 rippened earlier 9-14 d, then the yield decreased seriously.
Key words:
Winter wheat,
Water operation,
Later development stage,
Water use traits
中图分类号:
郭天财, 彭羽, 阎耀礼, 李翔, 沈东风, 王书子. 水分调控对小麦开花后水分利用特性及产量的影响[J]. 华北农学报, 2002, 17(1): 16-20. doi: 10.3321/j.issn:1000-7091.2002.01.004.
Guo Tiancai, Peng Yu, Yan Yaoli, Li Xiang, Shen Dongfeng, Wang Shuzi. Effects of Water Operation on Water Using Traits and field After Anthesis on Two C}ltivars of Winter Wheat[J]. ACTA AGRICULTURAE BOREALI-SINICA, 2002, 17(1): 16-20. doi: 10.3321/j.issn:1000-7091.2002.01.004.