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首页> 外文期刊>Acta Horticulturae >Comparison of open and recycling systems for ion accumulation of substrate, nutrient uptake and water and water use of tomato plants.
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Comparison of open and recycling systems for ion accumulation of substrate, nutrient uptake and water and water use of tomato plants.

机译：番茄植株底物离子累积，养分吸收，水和水分利用的开放式和循环利用系统的比较。

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The objective of the present study was to investigate the accumulation of nutrient elements in the root zone, nutrient uptake, changes in the electrical conductivity of substrate, plant growth and fruit yield under open and closed hydroponics systems. The tomato cultivar Ferrari F1 was used as plant material and grown in perlite in glasshouse experiment. In the open system, nutrient solution flowed freely. On the other hand, in the closed system, the drainage solution returned to the nutrient tank. In the closed system, the nutrient solution was renewed when EC value reached 4.5 dS/m in the nutrient tank. The substrate was analysed for Na, H2PO4, SO4, NO3, Mg, Cl, Ca, K, Mn, Fe, Zn, Cu content and EC value within 15 days intervals. Foliar analyses were done within 30 days intervals for Cu, Mn, Fe, Zn, Mg, N, K, P, Ca and Na. From five clusters, 59.9 t/ha fruit were obtained from the closed system, while 68.7 t/ha fruit were obtained from open system. The nutrient solutions were used in open (252.5 litres/plant) and closed systems (90.3 litres/plant) during 26 weeks of cultivation. EC value of the substrates finally reached 4.80 and 2.97 dS/m in closed and open systems, respectively. The concentrations of the tap water for Na, Cl, Ca and Mg caused moderate to important accumulations of these minerals especially in closed system. SO4, NO3-N and K accumulations were not determined in both systems. Moderate accumulation can be mentioned for H2PO4-P. The accumulation of micronutrients was not significant..
机译：本研究的目的是研究在开放和封闭水培系统中，根区养分元素的积累，养分的吸收，基质电导率的变化，植物的生长和果实的产量。番茄品种法拉利F1被用作植物材料，并在温室实验中的珍珠岩中生长。在开放系统中，营养液自由流动。另一方面，在密闭系统中，排水溶液返回营养罐。在密闭系统中，当营养罐中的EC值达到4.5 dS / m时更新营养液。在15天的间隔内分析基质的Na，H2PO4，SO4，NO3，Mg，Cl，Ca，K，Mn，Fe，Zn，Cu含量和EC值。在30天的时间间隔内对Cu，Mn，Fe，Zn，Mg，N，K，P，Ca和Na进行了叶面分析。从五个集群中，从封闭系统中获得了59.9吨/公顷的水果，而从开放系统中获得了68.7吨/公顷的水果。在培养26周期间，将营养液用于开放式（252.5升/植物）和封闭式系统（90.3升/植物）中。在封闭和开放系统中，基板的EC值最终分别达到4.80和2.97 dS / m。自来水中Na，Cl，Ca和Mg的浓度引起这些矿物质的中度至重要积累，尤其是在封闭系统中。在两个系统中均未确定SO4，NO3-N和K的积累。对于H 2 PO 4 -P可以提及中等积累。微量营养素的积累不明显。

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