节点文献
分根交替灌溉对大棚草莓生长、光合作用和氧化酶活性的影响
Effects of Alternative Partial Rootzone Irrigation (APRI) on Growth, Photosynthesis and the Antioxidant Enzyme Activity of Strawberry in Greenhouse
【作者】 宋磊;
【导师】 张继祥;
【作者基本信息】 山东农业大学 , 果树学, 2008, 硕士
【摘要】 本研究以草莓为试验材料,于2007年-2008年通过在温室大棚盆栽试验,探讨了APRI处理对草莓体内SOD、POD、CAT的活性,MDA、可溶性蛋白的含量、光合作用以及对生长和产量的影响。目的是通过研究APRI处理对生理生化指标,生长状态和产量的影响,探讨APRI在设施草莓生产上的应用价值及APRI技术的实用性和可操作性。研究结果如下:(1)分根灌溉和完全灌溉处理的草莓,在灌溉后短期内光合作用均受到抑制,这种抑制是非气孔限制作用造成的。APRI处理的草莓在4小时后,这种抑制就被缓解,草莓的光合作用逐渐升高。(2)就APRI处理整个过程而言,草莓的光合作用有一定的减小,这种减小是因为气孔限制造成的。(3)APRI处理对草莓灌溉后快速恢复光合作用有一定的促进,这一作用是通过提高草莓对环境变化的适应能力,缓解非气孔限制而体现的。灌溉后,APRI处理的草莓体内SOD、POD、CAT的活性、MDA、可溶性蛋白含量的变化与完全干旱处理相比较都没有剧烈的变化,这说明APRI处理的草莓具有更强的抗逆性。(4) APRI处理对草莓体内SOD、CAT、POD的活性和MAD、可溶性蛋白含量及其变化范围没有对草莓造成不可恢复性伤害。经过连续15天的测定表明,APRI处理的草莓体内各种酶的活性,MDA可溶性蛋白的含量都没有剧烈的变,并且在灌溉复水后能快速恢复到正常水平,所以APRI对草莓没有不可恢复性伤害,草莓能够正常生长。(5) APRI处理提高了草莓各器官的干物质含量。经过测定比较,APRI处理的草莓根、茎、叶中干物质的含量均有增加。(6) APRI处理对草莓的产量没有显著的影响。APRI处理的草莓比正常浇灌的草莓节约用水47.12%。APRI处理在草莓生产上具有节水的实际意义,并且确实可行,具有推广的价值。
【Abstract】 In this experimentation, strawberry as the material of experimentation, from 2007 to 2008 has been planted in a greenhouse. We researched the effect of APRI on Strawberry in the activities of SOD, POD, CAT, the content of soluble protein and MDA, photosynthesis, physiological and biochemical targets, the state of growth and output, respectively. The objective is through researching physiological and biochemical targets, the state of growth and output, to discusse the practicality and maneuverability of APRI on the production of strawberry. The results were as follows:(1) Two kinds of irrigation methods, after irrigation shortly photosynthesis was limited, it was the result of nostomatal limit. The limit on photosynthesis of strawberry with APRI treated in four hours, was unchained, photosynthesis gradually increased.(2) For the whole process of APRI, the photosynthesis of strawberry decreased, which was the result of stomatal limit.(3) APRI could renew the photosynthesis after irrigation, which carried out by raising the ability of adapting the strawberry to environmental changes, and reducing the limited of nostomatal. After irrigation, the activity changes of SOD, POD and CAT, the content of MDA, soluble protein of the Strawberry under APRI treatments were abated, which showed that the strawberries under APRI treatments had the stronger resistance.(4) The change of the activity of SOD, CAT, POD and the content of MAD and soluble protein were in the control of strawberry with APRI and did not cause irreversible injury. After 15 days consecutive mensuration, it showed that the activity of SOD, CAT, POD and the content of MAD, soluble protein had not drastic change, and after irrigation they could quickly return to normal levels, so the injury of APRI on strawberries could resume, strawberry could grow normally.(5) APRI increased the content of dry matter in various organs of strawberry. The dry matter in roots, stems and leaves of strawberry was increased.(6) APRI had not obvious affected on the production of strawberry. The yield of strawberry with APRI saved water by 47.12 %. APRI in planting strawberry has the real significance of saving water, doable and being generalized.
【Key words】 Alternative Partial Root zone Irrigation (APRI); Photosynthesis; Soil water content; Antioxidant Enzyme; Water-saving efficiency;