摘要
番茄成苗后的生长对水分胁迫反应敏感，首先反映在茎的粗细，随着水分胁迫的减少，番茄的茎变粗。对株高和叶片数的影响在三段果以下的栽培反应不明显。水分胁迫使番茄的叶绿素含量增加，植物体内水势下降，气孔关闭，蒸腾减小，光合速率减弱，进而使产量降低。在合理用水的前提下要提高产量，三段果以下的番茄栽培应把定植后到果实膨大前这段时期的土壤水分胁迫控制在０．０４ＭＰａ左右。果实进入膨大期以后的土壤水分胁迫应控制在０．
Tomato growth is sensitive to water stress.The stem diameter and leaf area were inhibited seriously by water stress.They were all significantly negative correlated with the value of stress.The height and leaf were not inhibited seriously by water stress on condition that it was cultivated in three spikes.The chloroplast content and stomatal resistance increase,and the plant moisture tensiometer,transpiration,photosynthesis and yield decreased with the increase of soil water deficit.According to the study,tomato should grow on water stress about 0.04MPa before the inflating of fruit on condition that it was cultivated in three spikes,then control the stress under 0.02MPa after the inflating of fruit.
出处
《华北农学报》
CSCD
北大核心
1997年第2期102-106,共5页
Acta Agriculturae Boreali-Sinica
关键词
番茄
生长
水分胁迫
Tomato
Growth
Water stress
