海藻生物有机肥对冬小麦的农艺性状和光合特性的影响

Effects of Seaweed Bio-organic Fertilizer on Agronomic Character and Photosynthetic Traits of Winter Wheat

为了探讨海藻生物有机肥对冬小麦的农艺性状和光合特性造成的影响,采取小区对比试验方法,探讨了冬小麦返青期后拔节—成熟期叶面喷施海藻生物有机肥的效果。结果表明,喷施海藻生物有机肥对冬小麦的株高影响较小,促进茎杆粗壮、干物质积累量增加,旗叶光合速率增加了3.16%,小麦产量增加6.85%。叶面喷施海藻生物有机肥可促进冬小麦生长,增粗抗倒伏,显著提高了单株穗重的同时,增加了容重,提高小麦籽粒的物理品质;有利于叶片叶绿素的合成和缓解叶绿素的分解,提高光合特性。在目前国家提出的化肥和农药双减形势下,本试验结果和数据可在全省和全国小麦种植区推广和应用。

This study aimed to investigate the effects of seaweed bio-organic fertilizer on the agronomic character and photosynthetic traits of winter wheat. Seaweed bio-organic fertilizer was applied to leaves of winter wheat under field plot experiment method,according to the dose of 45 kg/hm-2 from jointing stage to maturing stage. The plant height,dry matter accumulation,flag leaf photosynthetic characteristics and grain yield of winter wheat were investigated. In this study,the plant height of winter wheat showed no significant changes,while the stems thickened,dry matter accumulation promoted,the flag leaf photosynthetic rate increased by 3. 16% and yield increased by 6. 85% after foliar spraying of seaweed bio-organic fertilizer. The results showed that foliar spraying of seaweed bio-organic fertilizer promoted the intelligent growth and thickened the stems to improved lodging resistance. It also significantly increased the panicle weight per plant and the bulk density of winter wheat,as well as improving the physical quality of wheat grain. In addition,foliar spraying of seaweed bio-organic fertilizer promoted the synthesis of chlorophyll and mitigated the decomposition of chlorophyll in winter wheat,and promoted the photosynthetic characters. Under the background of fertilizer-pesticide double reduction,the test results and data of this study can be promoted in the wheat-growing areas of Shandong Province and even whole China.