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以稀植大穗型品种辽单145为材料,研究不同化控剂种类和喷施时期对辽单145光合特性、形态指标和产量的影响。结果表明,喷施化控剂提高了辽单145灌浆期穗位叶光合速率和叶面积指数。6展叶期和9展叶期,康丰利化控剂处理下辽单145叶面积指数和穗位叶光合速率分别达到最高值。与对照相比,喷施化控剂降低了辽单145株高和穗位高。喷施金得乐化控剂增加了辽单145茎粗,缩短其茎基部节间长度。测产结果表明,在6展叶期喷施康美化控剂可以显著提高辽单145产量。
The effects of different chemical control agents and spraying period on the photosynthetic characteristics, morphological indexes and yield of Liaohe No. The results showed that spraying chemical agent increased leaf photosynthetic rate and leaf area index of ear leaf at Liao Dan 145 filling stage. 6 leaf-setting stage and 9-leaf setting stage, the leaf area index and ear-leaf photosynthetic rate of Liao-luan 145 under Kangfengli chemical control agent reached the highest values respectively. Compared with the control, spray chemical control agent reduced Liao Dan 145 plant height and ear height. Spraying Goldlion chemical control agent increased Liao Dan 145 stem diameter, shorten the length of the base of its internode. The results showed that the application of Kang Mei Chemical Control Agent at the 6 leaf-setting stage could significantly increase the output of Liaodian 145.