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1 适时早播,培育适龄壮苗沪油15油菜苗期生长较缓慢,因此培育壮苗、壮苗越冬,对夺取高产的作用更为显著。壮秧要求:秧龄适中,株型矮壮,根茎粗短,单株绿色大叶6张,叶色深、叶片厚,白根旺盛,无病虫害。 1.1 苗床准备选择土壤疏松、肥沃、平整、向阳、草少,浇水和排水方便、靠近大田的花白桑地作为苗床为佳,按大田面积的20%的比例做足秧底面积。应适当摘去桑叶,确保通风透光,精细整地,达到土细地平,为播后全苗、匀苗打好基础。 1.2 适时早播,适量匀播
1 timely sowing, nurturing age Zhuo Miao 15 oilseed rape seedlings grow more slowly at seedling stage, so nurturing strong seedlings, strong seedlings wintering, the effect of seizing high yield is more significant. Strong seedling requirements: medium seedling age, short stature plant, rhizome stubby, green leaves large plant 6, dark leaves, thick leaves, white roots exuberant, no pests and diseases. 1.1 seedbed preparation options Loose soil, fertile, flat, sunny, grass less convenient watering and drainage, near the field of white sand mulberry seedbed as a better, according to the field area of 20% of the proportion of enough to do the bottom area. Should be properly removed mulberry leaves, to ensure that the ventilation and light, fine preparation, to fine soil level, after sowing the whole seedling, uniform seedling lay the foundation. 1.2 timely sowing, the amount of uniform broadcasting