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辽杂四号留蘖栽培(1～2蘖)的主茎变矮,茎粗变粗,穗长变长,有一定的增产效应;留蘖栽培抗倒伏效果明显。辽杂四号随着播期的延后和密度的增加,株高逐渐增加,茎粗逐渐变细,其最高产播期为5月5日前后。辽杂四号种植密度与倒伏率呈正桐关关系,密度从5400～7000株,倒伏率逐渐上升;密度从5400～5900株,产量呈线性上升;6000～6500株,为高产稳产密度;7000株以上为高产而不稳产密度。辽杂四号的最佳收获期为蜡熟后期,此时收获产量高、籽粒大、出米率高,米饭适口性好。
Liaoza 4 tillering cultivation (1 to 2 tillers) of the main stem shortening, coarse stem coarse, spike length longer, have a certain yield-increasing effect; tillering effect of anti-lodging is obvious. With the delay of sowing date and the increase of density, Liaoza No.4 increased its plant height and its stem diameter gradually became thinner. Its highest production date was around May 5. Liaoza No.4 planting density and lodging rate showed a positive correlation, the density from 5400 ~ 7000 strains, the lodging rate gradually increased; density from 5400 ~ 5900 strains, the yield increased linearly; 6000 ~ 6500 strains, for the high yield and stable production density; 7000 The above is high yield and unstable density. Liaoza No.4 best harvest period is waxy late, when harvesting high yield, large grains, high rate of rice, rice palatability good.