摘要
以库尔勒市包头湖农场田间实测数据为基础,研究不同春灌水量对不同盐度棉田土壤水盐变化的影响,并结合出苗率与地下水位分析其差异性。试验选取3个灌溉定额,3块棉田,共9个处理,同时将不同处理春灌前后及播种时水盐含量进行对比。排水条件相同时,对不同盐度棉田而言,并非春灌水量越多,脱盐效果越好。低盐度棉田选取较小春灌定额即可满足洗盐、压盐及保证出苗率要求;中盐度棉田应选取中等春灌灌水定额;高盐度棉田适宜选取较大春灌灌水定额。
Based on the field-measured data in Bao Touhu farm of Korta City, the influence of different spring irrigation scheduling on the soil moisture and salinity change in the cotton field with different salinity is studied in this paper. Moreover, the diversity is ana lyzed through the combination with seedling emergence rate and underground water level. In the experiment, totally nine treatments is set up with three irrigation quotas and three fields, and the contents of soil water and salinity of different treatments in different periods, including before and after spring irrigation, seeding period, are compared. The results show that under the same drainage condition, for cotton field with different salinity content, it is not that the more spring irrigation quantity, the better desalination effect. For cotton field with low salinity content, smaller spring irrigation quota can meet the demand of leaching salt, controlling salt and ensuring the seedling emergence rate~ for cotton field with middle salinity content, middle spring irrigation quota should be adopted; for cotton field with high salinity content, larger spring irrigation quota should be adopted.
出处
《节水灌溉》
北大核心
2014年第4期7-10,共4页
Water Saving Irrigation
基金
绿洲灌区节水关键技术研究与示范(201130103-3)
国家自然科学基金(51069015)
新疆水利水电工程重点学科资助
关键词
春灌
含水率
含盐量
地下水位
出苗率
spring irrigation
water ratios
salt content
underground water level
seedling emergence rate
