Abstract:
The ecological effects in wheat field of different planting patterns were studied.The results show that the soil bulk density of bed-planting is lowed significantly,and soil porosity is improved correspondingly.As far as soil respiration intensity,20~40cm of bed-planting is the highest,then 20~40cm of conventional flat planting,and 0~20cm of both,the lowest.The irrigation water amount received in deep soil layer in bed-planting is more than that in conventional flat planting,and the water use efficiencies in bed-planting are 1.62kg/m
3 and 1.56kg/m
3 and are improved by 21.8% and 16.4% respectively,higher than those in conventional flat planting of two cultivars.The air humidity inside wheat plant in bed-planting is lowed by 3.5%~15.5% than that in conventional flat planting and the solar energy use efficiency of grain and dry matter yield are increased by 10.0%~13.2% and 10.3%~10.8% respectively,the colony transparent rate of bed-planting is higher than that of conventional flat planting in the same cultivar but in different planting patterns.