白浆土施有机肥及石灰对土壤酶活性与大豆产量的影响

发布时间：2018-02-26 07:34

本文关键词： 白浆土大豆土壤酶活性有机肥石灰　出处：《中国土壤与肥料》2017年03期 　论文类型：期刊论文

【摘要】：白浆土是我国东北地区主要低产土壤之一,土体中白浆层通气透水能力极差,生物酶活性很低,导致土壤表旱表涝严重,旱田作物根系有效土层一般只有20 cm左右。为研究白浆土增施有机肥及石灰对大豆土壤酶活性及大豆产量的影响,设置了4个处理。结果表明3种酶活性均为:常规施肥+有机肥常规施肥+石灰+有机肥常规施肥常规施肥+石灰,说明有机肥的施用增加了土壤酶活性,石灰的施用降低了土壤酶活性;有机肥施用增加了土壤有机质,石灰施用增加土壤pH值,与对照相比,常规施肥+石灰处理大豆增产23.76%;常规施肥+有机肥处理增产28.32%;常规施肥+石灰+有机肥处理增产13.07%。说明有机肥及石灰无论是单独施用或是组合施用均对大豆增产有效。
[Abstract]:White soil is one of the main low-yield soils in Northeast China. The aeration and water permeability of white slurry layer in soil is very poor, and the activity of biological enzyme is very low, which results in serious surface drought and waterlogging. In order to study the effect of organic fertilizer and lime application on soybean soil enzyme activity and soybean yield, the effective soil layer of root system in dry field was only about 20 cm. Four treatments were set up. The results showed that the three enzyme activities were: conventional fertilization, organic fertilizer, conventional fertilizer, conventional fertilizer, conventional fertilizer, lime, which indicated that the application of organic fertilizer increased soil enzyme activity. Application of lime decreased soil enzyme activity, organic fertilizer increased soil organic matter, lime increased soil pH, compared with control. Conventional fertilizer lime treatment increased soybean yield by 23.76; conventional fertilization organic fertilizer treatment increased soybean yield by 28.322.The conventional fertilization lime organic fertilizer treatment increased soybean yield by 13.077.This indicated that organic fertilizer and lime application alone or combination were effective for soybean yield increase.
【作者单位】：黑龙江省农业科学院佳木斯分院;沈阳农业大学土地与环境学院;
【基金】：国家科技支撑计划项目(2014BAD11B01-A02)
【分类号】：S154.2;S565.1

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