播期和密度对茎瘤芥主要经济性状的影响

为给茎瘤芥的标准化栽培技术提供依据,研究了播期和密度对茎瘤芥主要经济性状的影响。结果表明:(1)播期和密度对茎瘤芥瘤茎主要经济性状的综合效应明显。(2)播期对瘤茎的小区产量、横径有显著的正效应,对瘤茎的纵径、菜形指数有显著的负效应,对单株瘤茎产量有不明显负效应;密度对单株瘤茎重有显著的负效应,对瘤茎纵径有显著的正效应;对瘤茎小区产量、横径有不明显的负效应,对菜形指数有不明显的正效应。(3)播期和密度的交互作用显著地影响瘤茎的小区产量、单株瘤茎重、瘤茎纵径,对横径和菜形指数影响也明显。据此,建立了相应的数学模型。

Effect of Sowing Date and Density on Economic Characters of Tumorous Stem Mustard

The effect of the sowing date and density on the main economic characters were analyzed in tumorous stem mustard. The result showed as follows. (1)The effect of the sowing date and density on the main economic characters were very obvious. (2) Sowing date had a positive significant effect (P<0.05)on the breadth and output, a negative significant effect (P<0.05)on the length and stem index,and unsignificant negative effect on the output per plant. Sowing density had a significant negative effect(P<0.05) on the weight of per plant and output per plot , a positive significant effect(P<0.05) on the length, and unsignificant positive effect on stem index. (3)The cross effect of the sowing date and density on the yield of the plot,tumorous stem weight of per plant and vertical length were significant(P<0.05=. The mathematic models were built on the basis of the analyses.