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１９９４～１９９６年选用中粳分蘖力较弱的大穗型组合８０优１２１和分蘖力强的多穗型品种西光，在合肥进行播栽密度和追氮方法试验，统计分析结果表明，中粳稻库、源形成与播栽密度和追氮方法密切相关，其有效库容和经济产量源均与稻谷产量呈线性关系。稀播少本栽的平均每穗颖花数和单位颖花量显著加大，单位有效库容扩大１６％左右，后期干物质生产量增９％～１３％。追氮采取“轻攻蘖重保花措施”使大穗型组合有效库容扩大１０．８％～１４．５％，后期增源１５．９％～２８．５％。多穗型品种采取“重攻花轻保花”措施有效库容扩大４．１％～１４．７％，后期增源６．５％～２９．７％。播栽密度和追氮方法库、源效应的交互作用极显著，多穗型品种稀播少本栽与“重攻花轻保花”配套，大穗型组合超稀播单本栽与“轻攻蘖重保花”配套，可使有效库容和后期增源均多４０％左右
From 1994 to 1996, we selected the large panicle type 80 You 121 with strong tillering ability and the multi-spike variety Xiguang with strong tillering ability to test the density and nitrogen recovery method in Hefei. The statistical analysis showed that the middle-japonica rice The formation of the source is closely related to the sowing density and the method of nitrogen recovery. The effective storage capacity and economic yield source are linear with the rice yield. The average number of spikelets per spike and unit spikelet volume of sparsely planted and planted spikes increased significantly, with an effective inventory of about 16% and an increase of 9% to 13% of post-production dry matter production. Nitrogen recovery to take a “light re-tillering Paul measures to ensure that the large pan-type combination of effective storage capacity expanded by 10.8% to 14.5%, 15.9% to 28.5% late. Multi-spike varieties to take ”re-attack flowers spend light“ measures to expand the effective storage capacity of 4.1% to 14.7%, the late source of 6.5% to 29.7%. Planting density and nitrogen recovery method library, the interaction of source effect is extremely significant, multi-spike varieties planted thin and less planted with ”heavy attack flower light flower“ matching, large panicle combination of ultra-thin sowing single planted with ”light Tiller reinsurance flower "package, the effective storage capacity and the late increase of more than about 40%