Effects of Different Colors of Plastic Film on Soil Water Heat Conditions and Winter Wheat Growth
In order to study the effects of different colors film mulching on soil water,thermal characteristics and winter wheat growth,two color film mulching treatments of black and white were set under rainfed conditions,and the TRIME-TDR and the thermometers were used to dynamically monitor the soil water and heat during the growth period of winter wheat.The results showed that:there was a significant warming effect on soil temperature (0～5 cm layer) under film mulching treatments in the whole growth period.The warming effect was mostly reflected from the seedling stage to turning green stage.Compared with CK,at wintering stage the black mulching(BP) and white film mulching(WP) treatments increased the TTsoil by 130.5 ℃ and 69.8 ℃,respectively.The top soil water content of BP treatment was 5.3％ higher than that of BP treatment.From wintering to turning green stage,BP treatment had the highest soil water storage in 0～100 cm depth.Compared with WP treatment and CK,soil water storage increased by 40.1 mm and 23.2 mm in BP treatment,respectively.The growth rate and dry mater of BP treatment were higher than those of WP treatment in the reproductive stage.Compared with CK,the yield of BP and WP treatments increased by 11.7％ and 6.5％.The water use efficiency of BP and WP treatments were 15.8％ and 7.3％ higher than that of CK.In all,BP treatment could reduce the impact of lower temperature on winter wheat.In drought season of early spring,BP treatment could provide more water for the winter wheat growth.
cumulative soil thermal timesoil water use efficiencygrowth rateyield
国家科技期刊平台
NSTL
万方数据
维普
