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培育壮苗是获得油菜高产的基础。壮苗的标准是：植株绿叶数７片以上，根茎直立粗壮，直径达６毫升以上，主根粗大，支细根多，新根多，移栽后活棵快，生长迅速，达到秋发之目的。一、苗床准备１．苗床选择选择质地疏松肥沃，灌溉方便的地块，苗床与移栽大田面积的比例１∶...
Nurturing strong seedlings is the basis of high yield rapeseed. Strong seedling standard is: the number of plants more than 7 green leaves, rhizome erect stout, diameter of 6 ml or more, the main root coarse, fine roots and more new roots, transplanting live fast, rapid growth, to achieve the purpose of autumn hair . First, seedbed preparation 1. Selection of seedbed Select loose and fertile soil, convenient irrigation plots, seedbed and transplanting field area ratio 1: ...