不同农艺措施对浦东滨海滩涂垦区土壤熟化的影响

Effects of agronomic practices on the soil maturation of the Pudong coastal beach reclamation area

上海市浦东新区滩涂垦区土壤经高灌低排水位工程淡水洗盐后进行田间试验,在水旱轮作模式中研究秸秆还田、畜禽粪便和不同茬口模式对滨海滩涂垦区土壤熟化的影响。经过2年田间试验,结果表明:不同改良措施中畜禽粪便对垦区土壤改良的效果最佳,可显著增加土壤转化酶、脲酶活性、微生物量、有机质和CEC。改良示范区产量虽然大幅度低于面上产量,但与常规对照相比,施用鸡粪和猪粪显著提高水稻及小麦产量。

After salt-leaching with fresh water in the Pudong coastal beach reclamation area the 2-year field experiments were carried out under straw manuring, animal and poultry manure applica- tion,and different-crop planting patterns in paddy-upland rotation. The results showed that animal and poultry manure had the best effect on soil improvement and could significantly increase the soil invertase and urease activities, microbial biomass, organic matter and CEC. Compared with the con- ventional fertilization, the manure application in the demonstration plot of soil improvement signifi- cantly increased wheat and rice yields which were much lower than those in the ordinary farmland, though.