摘要
在新疆气候干旱与土壤盐碱化并存,是制约新疆农业发展的主要因素,利用开沟覆膜滴灌技术在重盐碱地上种植打瓜,利用1/5土水比浸提,烘干残渣法分析土壤盐分变化,结果显示,5月21号膜下部分0~20 cm深度的土壤含盐量全部下降到1%以下,到7月22日,膜下部分0~60 cm深度土壤含盐量全部下降到2.5%以下;利用surfer软件作图显示,在打瓜生育期,根区始终处于脱盐状态,盐分向裸地0~30 cm深度积累,随着根系的生长,膜下部分的低盐区逐渐扩大,与打瓜的生长同步进行。
The drought and salinization of soil coexist in Xinjiang,which is the main reason for restricting development of agriculture in Xinjiang.In this paper ditch and drip irrigation under mulch technology are used to plant seeding-melon in saline land,using 1/5 ratio of soil water extraction of soil salinity changes.The results show that the soil salinity of 0~20 cm depth decreased to less than 1% totally on May 21;the soil salinity of 0~60 cm depth has been down to 2.5% totally on 22 July;mapping under surfer software shows that during seeding-melon growing period,the root zone is always out of desalination.Salt accumulates to 0~30 cm depth of the bare land.With root growing,low-salt area gradually expanded,and melon was growing simultaneously.
出处
《中国农村水利水电》
北大核心
2010年第12期1-3,7,共4页
China Rural Water and Hydropower
基金
国家自然科学基金项目(50969008)
兵团优秀青年创新资金专项(2010JC31)
"973"计划前期研究专项(2009CB125901)
关键词
开沟
覆膜
滴灌
盐碱地
ditching
film mulching
drip
saline land
