摘要
在海拔 2 96 0 m的高寒地区 ,饲用芜菁栽培试验表明 ,塑料地膜的增温保墒作用有利于芜菁的生长发育和产量的增加 ,与对照相比 ,覆膜使芜菁的出苗日期提前 6 d,平均生长率提高了 2 .0倍 ,最大叶面积指数增加 1.6 5倍 ,郁闭叶面积指数天数延长 15d,块根产量增加2 0 .8% ,粗蛋白、粗纤维、Ca和 P含量分别增加 16 .2 0 %、9.4 6 %、2 1.6 0 %和 2 4 .74 % ,且差异均达到显著水平 (P<0 .0 5)。
An experiment on growing fodder turnip (Brassica rapa) in an area of 2 960 m above sea level in Gansu indicated that plastic mulching would promote the growth and yield of the fodder crop with improved conditions of soil temperature and moisture. Compared to the control (without mulching), the crop with mulching had an earlier emergence by 6 days, a faster average growing rate by 2 times, a larger maximum leaf area index by 1.65 times, a longer closing leaf area index by 15 days, a better yield with 20.8% increase and significant increases in the content of protein, fibre, Ca and P.
出处
《草业学报》
CSCD
2000年第2期83-88,共6页
Acta Prataculturae Sinica
基金
甘肃省科委"九五"重点项目!"高寒牧区人工草地及其集约化草地畜牧业研究"的一部分
关键词
高寒地区
饲用芜菁
地膜栽培
alpine area
fodder turnip
plastic mulching
growth
yield
quality
