据调查考察,今年油菜生产的基础比去年好,表现在秧苗素质好,移栽适时,管理也比较及时。但是,由于从73年10月14日至74年1月13日连续92天基本无雨,对油菜生长有一定影响,总的来看,目前油菜生长有以下几个特点:一、绿叶少,叶面积小,营养生长不足。早熟品种一月底考察:72年有绿叶7.2张,73年为8.5张(多雨高温出叶快但叶面积 According to the survey, the base of rapeseed production this year is better than last year, manifested in good quality seedlings, transplanted timely, management is more timely. However, since there was almost no rain for 92 consecutive days from October 14, 1973 to January 13, 74, the growth of rapeseed was affected to some extent. Generally speaking, the current rape growth has the following characteristics: First, fewer green leaves, Leaf area is small, lack of nutrition growth. At the end of January, precocious varieties were inspected: 72 leaves with green leaves in 72 years and 8.5 leaves in 73 years (rainy leaves with high temperature but fast leaf area