摘要
二氧化碳是光合作用的原料。环境中CO_2供应是否充足,对作物的光合和产量有很大的影响。晚茬麦地膜覆盖栽培,改善了小麦赖以生存的环境条件,特别是膜下CO_2浓度的变化,对小麦的正常生长发育至关重要。因此,探讨覆膜麦膜下CO_2浓度的变化规律,对晚茬麦高产理论研究具有重要意义。
Under film covers of wheat, the variatioa treads of CO_2 concentration are similar despite of different sowing time, old or new plastic films, or sunny or cloudy days. The diurnal course of CO_2 concentration can be divided into 3 stages: gradual rise, straight line drop and cyramic equilibrium. There will be lack of CO_2 in varying degrees when it is below the(ynamic equilibrium. Increasing CO_2 concentration under plastic films will great(?)y promote the photosynthesis and yield of late (?)owing wheat.
出处
《生态学杂志》
CAS
CSCD
北大核心
1991年第5期54-57,共4页
Chinese Journal of Ecology
关键词
小麦
栽培
二氧化碳
地膜
浓度
CO_2 concentration, mulching cultivation, wheat.
