金诺丰叶面肥对旱地冬小麦陕农981旗叶光合和灌浆特性及产量的影响

以冬小麦陕农981为材料,采用单因素随机区组设计,研究了不同时期喷施叶面肥金诺丰对陕农981灌浆期旗叶光合特性、籽粒灌浆特性和产量的影响.结果表明:金诺丰能够提高小麦灌浆期旗叶的光合速率和籽粒灌浆速率,分别较对照提高14.5%和10.7%;增加籽粒干物质的积累量,较对照增加2.6%;产量构成三要素都有不同程度提高,成穗数、穗粒数、千粒重分别平均提高8.0%、7.5%和2.6%.不同时期喷施对产量的影响大小依次是拔节期＞开花期＞灌浆期＞分蘖期＞返青期.

Effect of Jin Nuofeng on the flag leaf physiological characters and yield of winter wheat Shaannong 981on upland

Based on randomized block design for single factor,the effect of Jin Nuofeng on flag leaf photosynthesis characters,grain grouting characters and yield of the winter wheat Shaannong 981 was studied.The result showed that spraying Jin Nuofeng on winter wheat in different stages increased the flag leaf photosynthesis rate and grain grouting rate by 14.5%,10.7%,respectively,and enhanced dry matter accumulation in grain by 2.6%,compared with CK;.Spike number,grain number of Spike,and 1 000 grain weight were also increased,but the yield increasing effect of spraying in different stage was different.The best spraying period was in jointing stage,the next was in the anthesis stage,their yield amounted to 6 774.0 kg/hm2 and 6 576.1 kg/hm2,respectively,which were 10.49% and 7.3% more than that of CK,respectively.