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以汕优浙３、威优华联２号、汕优４８－２为对象，研究了油菜茬早杂产量超７．５ｔ／ｈｍ２的基础条件（１）粗壮的秧苗：移栽前单株白根数＞８．５条，单株绿叶数５．２～５．４张，单株带蘖数＞１．６个；（２）抽穗后有足够的绿叶面积和合理的冠层结构：齐穗后１０ｄ叶面积系数＞４．９；（３）较高的干物质生产量：齐穗期干物质生产达到９．０ｔ／ｈｍ２。进而提出栽培技术要点是：培育壮秧促早发、超前搁田控群体、科学施肥促大穗
With the Shanyouzhe 3, Weiyou Hualian 2, Shanyou 48-2 as the object, we studied the basic conditions of the early hybrids yield more than 7.5t / hm2 (1) thick seedlings: white roots before transplanting The number of green leaves per plant was 5.2-5.4, and the number of tillers per plant was> 1.6. (2) There were enough green leaf area and reasonable canopy structure after heading: full heading Leaf area coefficient> 4.9 after 10 days; (3) higher dry matter production: dry matter production reached 9.0 t / hm2 at heading stage. And then put forward the main points of cultivation techniques are: to cultivate strong seedling promote early hair, ahead of field control group, scientific fertilization to promote the ear