摘要
地膜覆盖提高土壤温度对马铃著生长的影响,主要是在出苗和植株生长的初期,可使出苗期比露地栽培提前7～8天。这种影响主要是通过增加土壤5～10cm深处10℃以上的有效积温而实现的。同时,由于提前见光进行物质生产与积累,使匍匐茎顶端开始膨大的时间,茎叶与块茎干重平衡,块茎的日平均增长量达到高峰期都相应提前。在整个生长过程中,覆膜栽培每一测定期的生物产量均比露地要高,这种差别到后期逐渐缩小。
The influence of ground coat cover through increasing soil temperatllre on the growth of potato was mainly at the primary stages of seedling and growth, causing the seedling period 7～8 days earlier than the bare ground cultivation mainly because the effective additienal temperature above 10℃ in the soil laye 5～10cm down the sur(?)ce. more matter was produced and accumulated because of the earlier exposure to sunlight, which made them earlier for the top parts of soboles to begin to be expanded, for the dry weight of shoots and that of tubers to be in equallibrium. In the whole growth prccess, the biological yields measured every time under grourd coat cultivation conditions were higher than check, the difference of which decreased gradually in the lategrowing periods.
出处
《莱阳农学院学报》
1989年第4期17-22,共6页
Journal of Laiyang Agricultural College
关键词
马铃薯
地膜覆盖
发育
经济效益
ground coat
growth and development
Sol(?)m(?) tuberosum L
