雅安地区蓉油3号综合高产栽培技术初步研究

PRELIMINARILY STUDY ON COMPREHENSIVE CULTURAL PRACTICES OF HYBRID OILSEED-RAPE—RONGYOU NO.3 FOR HIGH-YIELDING IN YAAN REGION

运用三因素五水平二次正交旋转组合设计方法，研究了雅安地区蓉油３号栽植密度、氮化肥与磷化肥的用量对产量及主要经济性状的影响，并建立了相应的数学模型，得出在试验的土壤肥力水平下产量达２．２５ｔ／ｈｍ２以上的高产栽培技术方案是：栽植１５—１６．５株／ｍ３，分别施化肥Ｎ１００—１５０ｋｇ／ｈｍ２和Ｐ２Ｏ５４５—７５ｋｇ／ｈｍ２。

A field experiment of quadratic orthogonal regressive rotation design of three factors was conducted. The mathematical models of planting density, application rate of nitrogen and phosphorus for high-yielding and other economic characters were established and the scheme of cultural practices for yielding above 2.25t/hm 2 was computed from the model as fellows: transplanting at the densities of 15.5—16.5 plants/m 2 , applying the fertilizers N 100—150 kg/hm 2 and P 2 O 5 45—75kg/hm 2 .