土壤改良剂对松嫩平原盐碱土壤理化性状、水稻生长及产量的影响

Effects of Soil Amendment on Improvement of Saline-alkali Soil Physiochemical Properties and Rice Growth in Songnen Plain

通过大田试验,研究了4个改良剂处理对松嫩平原盐碱地土壤理化性质及水稻生长的影响。结果表明:4个改良剂处理均能够有效提高土壤速效钾、速效磷、有机质含量,降低0~30 cm土壤pH、交换性钠含量,并能促进水稻生长,提高水稻产量。改良后土壤HCO_(3)^(-)、SO_(4)^(2-)、Na^(+)含量升高,Cl^(-)、Ca^(2+)含量降低,Mg^(2+)、K^(+)含量变化不大。综合分析可知改良剂SH效果较为显著。

This study analyzed soil physiochemical properties and rice growth indicators by a field experiment and investigated the effects of four amendments.The results showed that compared with CK,the contents of soil available P,available N,organic matter were increased,soil pH and exchangeable sodium in 0~30 cm were reduced,it can also promote rice growth and increase rice yield.After the improvement,the contents of HCO_(3)^(-),SO_(4)^(2-)and Na^(+)increased,the contents of Cl^(-)and Ca^(2+)decreased,and the contents of Mg^(2+)and K^(+)had little change.Comprehensive analysis showed that the effect of improver SH was more significant.