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针对三熟制油菜茬口晚、土壤速效养分少,难以满足油菜苗期营养生长的需要、不利于早发冬壮的特点,我县近几年来在油菜生产上逐步扩大一次重施随根肥,将追施苗肥的速效化肥和其它农家肥料一次集中施于油菜根部,促进了大面积平衡增产,平均每亩增产110斤左右。一、早活棵、早发苗,加快营养体的生长,有利于提高光合效率,积累较多的营养物质。据定点观察,每亩施30斤硫铵作随根肥,比作苗肥的单株绿叶数增加2—3片;根颈
For the third crop of rapeseed crop late, soil less available nutrients, it is difficult to meet the needs of vegetative growth of rapeseed seedling is not conducive to the characteristics of early winter strong, in recent years in our county rapeseed production gradually expanded once again re-applied with root fat, Quickly topdressing Miao fertilizer and other farmhouse fertilizers will once be applied to root of rape and promote large-area balanced increase of yield, with an average yield of about 110 kg per mu. First, early live tree, early seedlings, accelerate the growth of vegetative, is conducive to improving photosynthetic efficiency, accumulate more nutrients. According to fixed-point observation, 30 kg of ammonium sulfate per acre applied with root fertilizer, compared with the number of single green leaflets increased 2-3 tablets; root neck