以华双5号为材料,研究了叶龄和密度对油菜免耕摆苗产量及其构成因素的影响。结果表明,叶龄和密度及其互作值对产量均有极显著影响,在4叶、5叶、6叶范围内,油菜摆栽叶龄越小,产量越高;每公顷密度在9万株、12万株、15万株范围内,摆栽密度越大,产量越高;叶龄4叶期,密度12万株和15万株时油菜产量比CK减产不显著,其余叶龄和密度处理比CK减产显著或极显著。 Taking Hua-Shuang 5 as the material, the effect of leaf age and density on the yield and its components of ramose no-till was studied. The results showed that leaf age and density and their interaction values ​​had a very significant effect on yield. The leaf age of the rape plants was smaller and the yield was higher within 4 leaves, 5 leaves and 6 leaves. The density per hectare was 90,000 In the 4-leaf stage, the yield of 120 000 and 150 000 plants at the four-leaf stage was not significantly different from CK, and the remaining leaf age and density Significant or significant reductions were observed in CK treatments.