摘要
在日光温室膜下滴灌条件下,采用E20蒸发皿的水面蒸发量控制灌溉,研究了不同蒸发皿系数(Kcp=0.45,0.6,0.75,0.9)对初花期甜瓜生长、生理特性的影响。结果表明:(1)水分处理对温室膜下滴灌甜瓜15 cm处地温产生了显著影响,其中T2(0.6)与T3(0.75)处理的地温对甜瓜生长较为有利;(2)水分处理对甜瓜叶片扩展和叶面积大小影响较大,以2 d为灌溉周期,蒸发皿系数(Kcp)采用0.6有利于甜瓜叶片扩展,而且植株叶面积最大;(3)从甜瓜株高、茎粗/株高、总生物量与根冠比、叶片水分状况、叶片光合生理指标等综合分析,蒸发皿系数Kcp采用0.6(T2)都要优于其它水分处理。
Based on the irrigation interval of 2 days, this study was conducted to evaluate the effects of different plant-pan coefficient（ Kcp = 0.45, 0.60, 0.75 and 0.90） on the growth and physiological characteristics of drip-irrigated muskmelon under film mulch in greenhouse. Irrigation quantities were determined by water surface evaporation （Epan） measured by a standard 0.2 m diameter pan. The results showed that： （1） The ground temperature （15 era） of muskmelon was remarkably influenced by different water treatments. Among them, the treatments of T2 and T3 were more suitable to the growth of muskmelon; （2） The leaf size and development of muskmelon was greatly influenced by different water treatments. Based on the interval of 2 days, keeping the plant-pan coefficient（ Kcp ） as 0.6 not only were of advantage to the development of leaf, but also obtained the maximal leaf area; （3） Through analyzing plant height, stem diameter/plant height, biomass, root/shoot, leaf water status, leaf photosynthetic index, the results indicated that keeping the plant-pan coefficient（ Key ） as 0.6 was more suitable to the development of drip-irrigated muskmelon under film mulch in greenhouse. Water saving and efficient management was reached in the treatment of T2.
出处
《干旱地区农业研究》
CSCD
北大核心
2009年第4期22-26,36,共6页
Agricultural Research in the Arid Areas
基金
国家自然科学基金项目(50779059)
