摘要
设置白色聚乙烯地膜(WP)、渗水地膜(SP)、黑色地膜(BP)、不覆膜(CK)4个处理,通过研究0~100 cm土壤贮水量、0~20 cm土壤地温、谷子农艺性状及产量,探讨地膜覆盖对谷田土壤水热状况及谷子籽粒水分利用效率的影响。结果表明,WP、SP、BP处理全生育期平均贮水量分别为261.5,264.9,264.1 mm,较CK分别增加18.7%,20.2%,19.9%;全生育期0~20 cm土层日均温度分别为19.9,19.5,19.0℃,较CK分别增加1.6,1.2,0.7℃;产量分别为5782.5,5916.6,6052.5 kg/hm^2,较CK分别增产35.5%,38.7%,41.9%;谷子籽粒水分利用效率分别为21.9,22.7,23.6 kg/(mm·hm^2),较CK分别提高63.4%,69.4%,76.1%。谷子田覆盖地膜增产效果显著,黑色地膜在产量和水分利用方面表现更优。
Four treatments,including white polyethylene mulch(WP),permeable mulch(SP),black mulch(BP)and no mulch(CK),were used to study the effects of film mulching on the soil water and heat status and water use efficiency of millet by studying the soil water storage capacity of 0-100 cm,soil temperature of 0-20 cm,agronomic characters and yield of millet.The results showed that the average water storage during the whole growth period of WP,SP and BP was 261.5,264.9,264.1 mm,respectively,which was 18.7%,20.2%and 19.9%higher than CK.The average daily temperature of 0-20 cm soil layer in the whole growth period of WP,SP and BP was 19.9,19.5,19.0℃,respectively,which was 1.6,1.2,0.7℃higher than CK.The yield of WP,SP and BP during the whole growth period was 5782.5,5916.6,6052.5 kg/hm^2,respectively,which increased by 35.5%,38.7%,41.9%compared with CK,respectively.The water use efficiency of WP,SP and BP was 21.9,22.7,23.6 kg/(mm·hm^2),respectively,which was 63.4%,69.4%and 76.1%higher than CK,respectively.In summary,the effect of mulching on the millet yield is significant,and the black mulch is better in terms of yield and water use.
作者
常乐
王丽霞
CHANG Le;WANG Lixia(Changzhi Vocational and Technical College,Changzhi 046000,China;Institute of Millet,Shanxi Academy of Agricultural Sciences,Changzhi 046000,China)
出处
《山西农业科学》
2019年第12期2135-2138,共4页
Journal of Shanxi Agricultural Sciences
基金
国家现代农业产业技术体系建设专项(CARS-06-13-5-A21)
山西省重点研发计划重点项目(201703D211002-6)
关键词
地膜覆盖
温度
贮水量
水分利用效率
产量
plastic film mulching
temperature
water storage
water use efficiency
yield
