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以水稻不同行距配置为基础,构建不同的群体冠层结构,于乳熟期系统测定水稻群体光分布情况,于成熟期测定产量及产量构成指标,分析冠层PAR截获率、消光系数与产量关系。结果显示,产量与冠层PAR截获率达到极显著相关,且为正相关;产量与群体消光系数达到极显著相关,且为负相关。在吉林省西部水稻区,行距30~20 cm和行距40~25 cm配置冠层结构优良,且能有效提高水稻群体产量。
Based on the arrangement of different row spacing of rice, different groups of canopy structure were constructed, and the light distribution of rice population was determined at milk ripe stage. The yield and yield components were measured at mature stage. The relationship between interception rate of PAR, extinction coefficient and yield . The results showed that the yield and canopy PAR interception rate reached a very significant correlation and positive correlation; yield and population extinction coefficient reached a significant correlation, and negative correlation. In the rice area in the west of Jilin Province, the canopy structure was excellent at 30-20 cm spacing and 40-25 cm spacing, and could effectively increase the rice population.