不同时期钙处理对葡萄光合特性及产量的影响

Effect of Calcium Treatment at Different Stages on Photosynthetic Characteristics and Yield of Grapes

为确定葡萄喷钙的最佳时期,为葡萄的高产优质栽培提供依据,本试验设置4个喷施时期(抽穗期、盛花期、幼果期和果实膨大期),探究不同时期钙处理对葡萄光合特性及产量的影响。结果表明:光合特性方面,以盛花期和幼果期进行钙处理效果较好,叶绿素含量、辐射截获率、净光合速率、SPAD值均较高;产量方面,葡萄单株穗数、单穗粒数、单穗产量、单株产量均以盛花期喷钙处理最高,其次是幼果期喷钙处理。综合来看,钙处理对葡萄光合特性及产量具有一定影响,最适宜的喷钙时期为盛花期,其次是幼果期。

In order to determine the optimal period for calcium spraying on grapes and provide a basis for highyield and high-quality cultivation of grapes,this experiment set up four spraying stages(heading stage,blooming stage,young fruit stage and fruit expansion stage)to explore the effect of calcium treatment at different stages on grape photosynthetic characteristics and yield.The results showed that in terms of photosynthetic characteristics,calcium treatment during blooming stage and young fruit stage had better effects,with higher chlorophyll content,radiation interception rate,net photosynthetic rate and SPAD value;in terms of yield,the number of spikes per plant,the number of grains per spike,yield per spike and yield per plant of grapes were the highest under calcium spraying treatment during blooming stage,followed by calcium spraying treatment during the young fruit stage.Overall,calcium treatment has a certain impact on the photosynthetic characteristics and yield of grapes,and the most suitable calcium spraying period is the blooming stage,followed by the young fruit stage.