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研究了剪去不同水稻品种(组合)上部3片功能叶(或上部3片功能叶组合)对有效穗数、每穗实粒数、千粒重、单株子粒重的影响。结果表明,不同处理对各性状的作用大小均为剑叶+倒二叶+倒三叶>剑叶>倒二叶>倒三叶;大部分品种单独剪去上部3片功能叶的作用之和大于同时剪去上部3片功能叶效应值,少数品种与此相反;与前人试验结果比较发现,试验材料在稀植条件下剪去功能叶后,单株子粒重的减少比例比穗重的减少比例更能反映出功能叶对穗部光合产物的影响。
The effect of cutting three functional leaves (or the upper three functional leaves) on the effective panicle number, the number of grains per panicle, the 1000-grain weight and the weight of single plant per plant were studied under different rice varieties (combinations). The results showed that the effects of different treatments on the traits were flag leaf + up leaf + down leaf> flag leaf> inverted leaf> inverted leaf; Which is larger than that of the top three functional leaves at the same time. A small number of cultivars had the opposite effect. Compared with the previous experimental results, it was found that after cutting the functional leaves under the condition of thinning, Decreasing the ratio can better reflect the effect of functional leaves on ear photosynthate.