Cải thiện hóa học đất và năng suất lúa trồng trên đất phù sa nhiễm mặn bằng điên điển mấu (Sesbania rostrata L.)
Abstract
the rice yield. The research was carried out in clay pots (containing 10 kg dry soil) which were arranged in a completely randomized design (CRD) with 3 treatments including 3 levels of dilute sea water amendment (0‰, 3‰, 6‰) and 4 replicates for each treatment. OM7347 rice cultivar was grown soon after harvesting of S. rostrata. The results indicated that S. rostrata showed the great ability to reduce soil ECe (decreased 12,2%-17,7%); lowering soil exchangeable Na+ (decreased 11,4%-19,5%) and hence for decreasing soil SAR and ESP. By contrast, exchangeable Ca2+ was increased in soil at harvest in comparison of that before planting. There was a less impact of salinity stress on growth, biomass and nutrients uptake (Mg2+, N, P2O5, K2O) in S. rostrata. However, proline accumulation and the uptake of Na+, Ca2+ by S. rostrata were increased following salt amendment. Planting S. rostrata in salt-affected soil (0‰, 3‰ treatment) helped to increase significantly rice yield and hence they were likely to improve rice yield cultivated afterward better.
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