摘要
为了探讨改良剂对咸灌土壤的改良效果,采用咸水灌溉下小麦大田种植试验的方法,通过对不同改良剂与培肥方式结合等10个处理的土壤进行采样,分析施用改良剂与培肥方式对咸灌土壤理化性质、养分状况与小麦产量等方面的影响。结果表明,施用改良剂和培肥可降低土壤容重,增大渗透系数和毛管孔隙度,降低土壤pH和全盐含量;增加土壤有机质、速效磷和速效钾含量,而各处理的碱解氮含量低于对照处理;同时可提高小麦产量。因此,在本试验中,T4和T5处理,即改良剂B(醋渣+牛粪+石膏)+有机肥+无机肥和改良剂B+无机肥对改善土壤理化性状、提高土壤养分含量和使小麦增产的效果最好,可作为充分利用咸水资源和盐渍化土壤改良的有效方法。
To study the effects of amendments saline soil improvement, the field trial with 10 treatments of different soil amendments as well as fertility betterment was conducted on condition of saline water irrigation. In this experiment the effects of amendments and fertility betterment on soil physical and chemical properties, nutrient status and wheat yields were analyzed. The results showed that, the amendment and fertility betterment decreased bulk density, increased soil permeability coefficient and capillary porosity, reduced soil pH and total salt content. Meanwhile, the content of organic matter, available phosphorus and available potassium in soil was increased, but the content of alkali-hydrolysis nitrogen of all treatments were lower than CK. The amendment and fertility betterment increased wheat yields. The resuhs suggested that, treatment 4 （vinegar residue ＋ cattle manure ＋ gypsum ＋ organic＇fertilizer） and treatment 5 （vinegar residue ＋ cattle manure ＋ gypsum ＋ organic fertilizer ＋ inorganic fertilizer） had the best effect on improved soil physical and chemical property, increased soil nutrient and wheat yields, it was a good choice to make full use of brackish water and improve saline soil.
出处
《中国农学通报》
CSCD
2012年第36期113-118,共6页
Chinese Agricultural Science Bulletin
基金
国家"十一五"科技支撑计划项目"咸水灌溉对土壤理化性状的影响及其改良技术研究与应用"(2009BADA3B05)
关键词
咸水灌溉
改良剂
土壤理化性质
土壤养分
小麦
saline water irrigation
soil amendment
soil physical and chemical property
soil nutrient
winter wheat
