Abstract Taking cherry tomato variety‘PFZL’as test material，this paper carried out experimental
studies on overwinter tomato cultivation using soilless culture system with adjustable rhizosphere
temperature．The results showed that this system could effectively alleviate the influence of substrate
temperature by air temperature，maintain the stability of matrix temperature，and significantly improve
the rhizosphere temperature．Thus，the matrix temperature was controlled between 20-25 ℃，and the
average temperature，between 22-23 ℃．In winter adopting this system could promote the growth of tomato
plant height and stem diameter．Tomato yield could reach 22.9 t · hm-2，increased by 39.94% than that of
the conventional tomato cultivation．Compared with the traditional boiler heating method，the average
energy saving was 72.90%．The heating operation cost in winter was 0.33 yuan · m-2 · month-1，which
was significantly lower than 0.94 yuan · m-2 · month-1 by the coal-fired boiler．Obviously，this system has
significant yield increasing and energy saving effects．
|
|
Received: 03 August 2019
Published: 23 January 2020
|
|
|
|
