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首页> 外文会议>Effective Utilization of Agricultural Soil amp; Water Resources and Protection of Environment >Growth of Tomato in Greenhouse under Temporal-spatial Deficit Irrigation
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Growth of Tomato in Greenhouse under Temporal-spatial Deficit Irrigation

机译：时空亏缺灌溉下温室番茄的生长

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Partial rootzone drying (PRD) has been shown to stimulate stomatal-closure response and improve water-use efficiency.This study was conducted to.compare two water-saving practices,deficit irrigation(DI) and partial rootzone drying(PRD),and also examine how do they affect the growth of greenhouse grown tomato compared with traditional irrigation.A full-irrigated treatment as the control and 5 different irrigation treatments with limited irrigation water were applied to the tomato planted on clay soil.(1)FULL;(2)DI60;(3)DI70,the full amount of irrigation water was applied to the roots to all sides of the plant when the relative soil water content was lowered by 80%,60% and 70%.(4)D150,half of the full amount of irrigation water was applied at the irrigation time of full treatment.(5)1PRDS0;(6)2PRD50,50%deficit irrigation with PRD in which wetted and dry sides of the root zone were interchanged every and every other irrigation,respectively,when the relative soil water content was lowered by 80%;different irrigation practices applied at greenhouse grown tomato had different effects on the yield-related characters and they were examined.Irrigation water applied to tomato ranged between 230mm and 460mm.Both DI and PRD treatments resulted in a significant reduction of dry matter biomass compared to the control.However,since the total water used by transpiration was reduced by half in water deficits treatments;this has resulted in a substantial increase in plant water use efficiency.Although dry matter biomass differences were not statically significant,the highest dry matter biomass was obtained under FULL treatment over a growth period of 188 days after transplanting.Total dry matter biomass was reduced by 7.59%,19.84%,23.30%,21.17%,and 19.57% in DI60,DI70,DI50,1PRD50 and 2PRD50 resperctively compared with FULL treatment. The resulting irrigation-water-use efficiency (IWUE)which was calculated as the ratio of total dry biomass excluding fruit to irrigation water of the full treatment was 11.43kg ha-1.The DI60,DI70,1PRD50,2PRD50 treatments yielded 29.58% ～62.23 higher IWUE,compared with the control treatment.
机译：已证明部分根区干燥（PRD）可以刺激气孔关闭反应并提高用水效率。本研究旨在比较节水灌溉（DI）和部分根区干燥（PRD）两种节水实践，以及与传统灌溉相比，研究了它们如何影响温室番茄的生长。将全灌溉处理作为对照，并在有限的灌溉水下进行了5种不同的灌溉处理，对种植在粘土土壤上的番茄进行了处理。（1）全;（2 ）DI60;（3）DI70，当相对土壤含水量分别降低80％，60％和70％时，将全部灌溉水施于植物的根部。（4）D150，一半（5）1PRDS0;（6）2PRD50,50％的PRD亏缺灌溉，其中根部区域的湿侧和干侧每隔一次灌溉互换一次，当相对土壤含水量降低时减少了80％;对温室种植的番茄采用不同的灌溉方式对产量相关性状有不同的影响，并对其进行了研究。对番茄使用的灌溉水量在230mm至460mm之间.DI和PRD两种处理均导致干物质的显着减少然而，由于水分亏缺处理中蒸腾的总水量减少了一半；这导致植物水分利用效率大大提高。尽管干物质的生物量差异不是静态显着的，但最高FULL处理后在移植后的188天的生长过程中获得了生物质。在DI60，DI70，DI50、1PRD50和2PRD50中，干物质生物量分别减少了7.59％，19.84％，23.30％，21.17％和19.57％。与完全治疗相比。完全处理后不包括水果的干生物量与灌溉水之比计算得出的灌溉用水效率（IWUE）为11.43kgha-1。DI60，DI70、1PRD50、2PRD50处理的产量为29.58％〜与对照相比，IWUE高62.23。

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