生物型化肥增效抗盐碱剂在水稻上的应用研究

Applied Research on Bio-fertilizer Efficiency Salt Resistant Agent on Rice

以"盐丰47"水稻品种为试材,采取小区试验与大面积示范相结合的方法,探讨了化肥增效抗盐碱剂对土壤养分、水稻产量的影响。结果表明,生物型化肥增效抗盐碱剂可降低耕层土壤pH值与含盐量,增加土壤碱解N、速效P2O5含量,提高水稻叶片叶绿素含量,促进水稻分蘖,增加水稻群体叶面积指数与高效叶面积率,增加水稻群体干物质积累量与齐穗后干物质积累量占籽粒产量的百分比。G(增施抗盐碱剂5.0 kg/667 m2)、H(增施抗盐碱剂10.0 kg/667 m2,N、P2O5、K2O施入量减少10%)、I(增施抗盐碱剂10.0 kg/667 m2,N、P2O5、K2O施入量减少20%)处理的水稻产量659.8、636.7、609.9kg/667 m2,比CK处理分别增加了5.2%、1.5%、-2.8%。可见增施生物型化肥增效抗盐碱剂可降低耕层土壤盐碱危害,活化土壤营养成份,提高水稻产量。

By combining plot experiment with large area demonstration, it discussed the effect on soil nutrients and yield by us- ing bio-fertilizer efficiency salt resistant agent which use Yanfeng-47 as experimental material. The result indicated that the a- gent can reduce soil pH and salt, increase the content of soil available N and P2O5, increase dry matter accumulation and the rate that dry matter accumulation in the grains yield after heading. G （increasing the salt resistant agent 5.0 kg/667 m2）, H（in- creasing the salt resistant agent 10.0 kg/667 m2, then reduce the N,P2O5,K20 by 10%） and I （increasing the salt resistant agent 10.0 kg/667 m2, then reduce the N,P2Os,K20 by 20%） can achieve the yield 659.8 kg/667 m2,636.7 kg/667 m2 and 609.9 kg/ 667 m2, and increased 5.2%,1.5% ,-2：8% than CK. It is thus clear that increasing bio-fertilizer efficiency salt resistant agent can reduce soil salinization, active nutrition of soil and increase the yield.