硅基材料包膜肥对红壤区双季稻生长和土壤肥力的影响

发布时间：2018-02-20 14:35

本文关键词： 包膜肥双季稻土壤肥力微生物量碳氮比酶活性　出处：《中国土壤与肥料》2017年01期 　论文类型：期刊论文

【摘要】：选择了高肥力田、低肥力田,通过早、晚双季稻连续2年4季的大田试验,研究了施用硅基材料包膜肥对双季稻动态生长、产量、土壤肥力、微生物量、酶活性的影响。结果表明:不论是高肥力田还是低肥力田,与传统施肥相比,一次性基施硅基材料包膜肥能提高双季稻的最大分蘖数3~6枝·兜~(-1),提高成熟期叶片的叶绿素含量,提高成熟期双季稻的生物产量7.8%~22.4%,提高年均产量3.0%~14.7%,并且在低肥力田上效果显著。与传统施肥处理相比较,施硅基材料包膜肥可以显著提高双季稻成熟期土壤中的矿质态氮含量,提高幅度为28.3%~37.7%。包膜肥对土壤中微生物群落没有影响,在低肥力田施用80%的包膜肥其土壤酶活性综合指数最高。由此可见,施用硅基材料包膜肥在南方水稻上完全可以替代分次施用常规肥料,并且在高肥力田减少20%肥料用量的情况下仍然等效,达到了减肥增效和节本省工的目的。
[Abstract]:High fertility field and low fertility field were selected. The dynamic growth, yield, soil fertility and microbial biomass of double cropping rice were studied by using silicon coated fertilizer for 2 years and 4 consecutive years. The results showed that, compared with the traditional fertilization, the maximum tillering number of the double cropping rice was increased by using silicon based coating fertilizer, and the chlorophyll content of the leaves at the mature stage was increased by the application of silicon based coating fertilizer, the maximum tiller number of the double cropping rice was 36 branches 路Dou Pao 1, and the content of chlorophyll in the leaves at the mature stage was increased, compared with the traditional fertilizer application in the high fertility field and the low fertility field. The biological yield of double cropping rice at maturity stage was increased by 7.8% and 22.4, and the average annual yield was increased by 3.0% and 14.7%, and the effect on low fertility field was remarkable. Compared with the traditional fertilization treatment, the application of silicon-based coated fertilizer could significantly increase the content of mineral nitrogen in the soil during the mature period of double cropping rice. There was no effect of coated fertilizer on soil microbial community, but the comprehensive index of soil enzyme activity was the highest when 80% coated fertilizer was applied in low fertility field. The application of silicon-based coated fertilizer on rice in southern China can completely replace the conventional fertilizer, and is still equivalent under the condition of reducing 20% fertilizer amount in high fertility field, thus achieving the purpose of reducing weight and increasing efficiency and saving cost and labor.
【作者单位】：江西省农业科学院国家红壤改良工程技术研究中心农业部长江中下游作物生理生态与耕作重点实验室;中国农业科学院农业资源与农业区划研究所;
【基金】：国家自然科学基金(31101603) 国家科技支撑计划(2011BAD41B01) 江西省学科带头人培养计划赣鄱555工程人选资助项目
【分类号】：S511.42;S158

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