河北二季作区马铃薯节水灌溉研究初报

Preliminary report on experimental study of potato water-saving irrigation in double crop area of Hebei province

为研究河北二季作区马铃薯整个生育期不同灌水量对其生长发育的影响,以该地主栽品种为材料,根据不同生育期需水规律,设定5个不同水量梯度的滴灌处理和1个常规沟灌处理(CK);调查分析了不同处理间物候期、重要农艺性状、病害发生情况和产量等相关指标。结果表明,处理3(采用滴灌模式,水量为110 m3)与常规沟灌相比,马铃薯生长势、总产量和商品薯产量无显著差异,生育期提前,病害较轻,商品薯率提高7.2%,节水35.41%,综合表现优于其他处理,为试验地区最佳灌水量。

To study the effects of different irrigation amount on the growth and development of potato in double crop area of Hebei province,the main cultivated variety in this area was used as test material,five drip irrigation treatments with different water gradients and one conventional ditch irrigation were set according to the water demand law in different growing periods.The phenology period,important agronomic characters,disease occurrence and yield were investigated.The results showed that compared with the conventional ditch irrigation,treatment 3(drip irrigation,water quantity:110 m3)showed no difference in growth potential,total yield and yield of commercial potato,with earlier maturity,less disease,increased commercial potato rate by 7.2%and water saving of 35.41%.The comprehensive performance of treatment 3 was better than that of other treatments,which was the best irrigation amount.