陇东地区灌水对番茄无土栽培影响的研究

Effect of Irrigation on Tomato Soilless Cultivation in Longdong Region

针对陇东地区的特点,对日光温室内无土栽培番茄进行了探索性的研究,结果表明,秋茬温室番茄中后期适宜灌水量为700～900 mL/(株.d),基质适宜含水量为69.3%～80%。春茬温室番茄适宜灌水量为前期500～600 mL/(株.d),中期800～900 mL/(株.d),后期1 400 mL/(株.d),基质含水量应大于70%。不同灌水量对春茬番茄影响比秋茬大。秋茬可适当控水,春茬番茄随着植株的生长和温度升高及时调整灌水量。

The soilless culture technique of tomato inside solar greenhouse in longdong area was studied in this paper.The result of this experiments provides the theory basis for pollution-free vegetable production in longdong area.Suitable irrigation to tomato was 700～900 mL/（plant·day） in green house autumn crop during the middle and late stage of tomato development.The suitable moisture content of substrate was 69.3%～80.0%.Suitable irrigation to tomato was 500～600 mL/（plant·day）,800～900 mL/（plant·day） and 1 400 mL/（plant·day） in green house spring crop during the prophase,middle and late stage of tomato development respectively.The suitable moisture content of substrate is more than 70%.Effect of different irrigation on spring crop more than autumn crop.Autumn crop should cut down irrigation adequate.Spring crop should adjust irrigation with the growth and temperature increased.