交替微润灌溉在大棚菠菜种植中的应用

Application of Alternate Micro-irrigation on Cultivation of Spinach in Greenhouse

以大叶菠菜为试材,在大棚内采用微润灌溉与分根区交替灌溉相结合的灌溉方法,研究了不同压力水头与微润管间距下,交替微润灌溉对菠菜生长状况的影响。结果表明:交替微润灌溉处理下,灌溉用水量是常规充分灌溉的64.6%~71.5%,且交替微润灌溉下植株根长、株高、鲜质量、干质量等指标皆高于常规灌溉。在微润管埋5cm深的条件下,1.5m压力水头、30cm微润管间距处理植株生长状况较好,1.0m压力水头、20cm微润管间距处理水分利用率最高。因此交替微润灌溉不仅可以应用于大棚内菠菜种植,而且此灌溉方式在节约灌溉用水的同时可促进植株生长,提高产量。

Leaf spinach was used as test materials,and the methods of moistube irrigation and alternate partial root-zone irrigation were combined in greenhouse,the effect of alternate micro-irrigation on spinach growth under different pressure heads and micro pipe spacings were studied.The results showed that under alternate micro-irrigation,the irrigation water was 64.6%-71.5% of conventional irrigation.Under alternate micro-irrigation,the plant height,root length,fresh weight and dry weight were higher than that of conventional irrigation.Micro pipe was buried in the depth of 5 cm,under the treatment of micro pipe under 1.5 m pressure head,30 cm micro pipe spacing,spinach growth condition was better,under the treatment of 1.0 mhead pressure and 20 cm micro pipe spacing,the water use efficiency was the highest.The conclusion was that alternate micro-irrigation could be applied to the cultivation of spinach in greenhouse,and this irrigation method could promote plant growth and yield while saving irrigation water.