【摘要】 本文系统分析了覆膜栽培甜菜的叶片生长量,叶片出生时间,叶片生育龄期及其对产质量的影响。指出叶量增加,叶龄延长,对增加和保持叶面积系数,提高光合有效能量,获取高产高糖具有重要的意义.更多还原

【Abstract】 This paper systematically analysed the influence of plastic film mulching on sugarbeet blade growing, appeared lime, age of growing and developing and its effect on yield and quality of beets. It indicated that it with great significant in gaining high yield and high sugar content while adding leaf quantity and expanding leaf age, adding and rataining leaf area coefficient, raising effective photosynthesis.更多还原