摘要
为探索黔油系列油菜新品种黔油11号在贵州黔南山区自然生态条件下的高产栽培技术模式,在贵定采取二次最优回归设计研究了黔油11号产量与主要栽培因素(密度、氮、磷、钾施用量)间的数量关系,并建立了产量指标与各因素之间的回归数学模型。明确了黔油11号在该地区获得180kg/667m2以上的高产配套栽培措施的优化组合是:密度为7301.60~7776.38株/667m2,纯N施用量为11.363~12.649kg/667m2,P2O5施用量为7.888~9.111kg/667m2,K2O施用量为21.001~22.465kg/667m2。N∶P2O5∶K2O的最佳配比为1.5∶1∶2.7。在黔南地区影响黔油11号产量的主要栽培因素是栽培密度,其次是氮肥,再次是磷肥和钾肥。
For seeking the model of highyield cultivating technique of rape Qianyou 11, quadratic regression design was used to study quantity relation between yield and main cultivating technique factors (the density and amount of N, P2O5, K2O applied) in southern Guizhou. According to the experimental datum, a mathematical model between the main factors and yield was established. And then the model clear that the suitable cultivating technique of the excellent combination for the highyield (more than 2700 kg/ha) were density 109524~116645.7 plants/ha, amounts of N:170.4~189.7 kg/ha, P2O5:118.3~136.7 kg/ha, K2O:315~337 kg/ha. The best ratio of N∶ P2O5∶ K2O≈1.5∶1∶2.7. Density is the most important factor for yield of Qianyou 11 and the amount of N, P2O5 and K2O the second in southern Guizhou.
出处
《贵州农业科学》
CAS
2003年第4期10-13,共4页
Guizhou Agricultural Sciences
基金
贵州省农科院重点项目[黔科合农字(2001)01号]