【摘要】 本文所述银杏播种育苗试验,采用种粒大小(A)、栽培措施(B)和根部处理(C)三因素裂区设计。经裂区分析和随机区组分析,三因素对苗高生长都具有显著或极显著效应,但裂区分析的结果更为精确。同时三因素对提高苗木质量具有明显的互作效应。从而明确了银杏播种育苗中种粒大小、栽培措施和根部处理的最佳组合。更多还原

【Abstract】 Split blocks design of three factors, i.e. seeds number/kilogram (A), culturesteps(B), und root treats (C), were used to study the technique of growing seedlings ofGinkgo biloba, in order to make the rootstock of Ginkgo biloba have grafting height andthickness earlier, in which, A, was made to main treat; B, vice-treat; C, each treat subor-dinated to B. Both analysis of split block and randomiged block demonstrated that each oneof three factors had significant or much significant effects on enhancing seedlings’ extension,through making a comparison between the two analysis on plant height. The results fromsplit block analysis, however, were more accurate than that of randomized block. In splitblock analysis, there were more significant differences among the treats in vice-block, andthree factors synthetically influenced the seedlings’ height, thus determining the optimal com-bination of A, B and C for the techniques of growing seedlings of Ginkgo biloba.更多还原