溫室番茄莖稈直徑微(wei)變化與土壤含水(shui)量(liang)的關系

作者：薛俊華, 羅新蘭, 李天來, 花妍, 邱華銳, 鐘巖, 姚振坤         來源：江蘇農業科學
摘(zhai)要: 在日光(guang)溫室內(nei)以番(fan)(fan)茄(qie)品種(zhong)遼園多麗為試驗(yan)材料, 對溫室番(fan)(fan)茄(qie)植株(zhu)在一個干旱周期(qi)中莖(jing)(jing)直(zhi)(zhi)(zhi)(zhi)徑(jing)(jing)變(bian)(bian)化(hua)動態、不同天(tian)氣條件下莖(jing)(jing)直(zhi)(zhi)(zhi)(zhi)徑(jing)(jing)變(bian)(bian)化(hua)規律及莖(jing)(jing)直(zhi)(zhi)(zhi)(zhi)徑(jing)(jing)變(bian)(bian)化(hua)與土壤水(shui)(shui)分狀(zhuang)況的(de)關系(xi)進行試驗(yan)研(yan)究。結果表明: 一個干旱周期(qi)中, 隨著(zhu)土壤含(han)水(shui)(shui)量(liang)的(de)降低番(fan)(fan)茄(qie)莖(jing)(jing)直(zhi)(zhi)(zhi)(zhi)徑(jing)(jing)日變(bian)(bian)化(hua)幅(fu)度逐(zhu)漸增大, 莖(jing)(jing)直(zhi)(zhi)(zhi)(zhi)徑(jing)(jing)變(bian)(bian)化(hua)量(liang)能(neng)靈敏、適時、準(zhun)確(que)地反映植株(zhu)體內(nei)的(de)水(shui)(shui)分狀(zhuang)況; 晴天(tian)番(fan)(fan)茄(qie)莖(jing)(jing)直(zhi)(zhi)(zhi)(zhi)徑(jing)(jing)變(bian)(bian)化(hua)幅(fu)度明顯(xian)大于陰天(tian); 直(zhi)(zhi)(zhi)(zhi)徑(jing)(jing)日大收縮量(liang)與土壤相(xiang)(xiang)對含(han)水(shui)(shui)量(liang)具有極顯(xian)著(zhu)線性負相(xiang)(xiang)關關系(xi)( r2 = 0. 986 3)