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本文通过大田试验为了证实某些栽培春小麦产量受籽粒大小的限制的假设,于1985和1986年选粒重在32-46mg的8个栽培品种,做了重复试验测定。六叶期或抽穗期采用疏苗以提高发育穗的光合产物(源)的供给;开花期及花后8d和18d,摘除小穗使每穗小穗数保留10-11个,以增加对保留小穗源的供给;切除旗叶以减少正在发育籽粒源的供给。2年中,品种与减少小穗处理间的显著互作效应表明,某些品种籽粒库容量有限而制约了粒重。
In this paper, field experiments were conducted to determine the yield limitations of some cultivated spring wheat in terms of grain size. Eight cultivars with a grain weight of 32-46 mg were selected in 1985 and 1986 and tested repeatedly. Sparse seedlings were used in the six-leaf stage or heading stage to increase the supply of photosynthate (source) of the developing ear. At the flowering and post-flowering days 8d and 18d, the spikelets were removed to retain 10-11 spikelets per panicle, Supply of spike sources; removal of flag leaves to reduce the supply of seed sources under development. In two years, the significant interaction effect between variety and spikelet reduction indicated that the grain storage capacity of some varieties restricted the grain weight.