沼液施用对水稻生长和土壤养分的影响
Effects of biogas slurry application on rice growth and soil nutrients
蒋会东 1李永杰 2汤云龙 2王小波 1徐晓燕1
作者信息
- 1. 天津农学院农学与资源环境学院,天津 300392
- 2. 天津农垦渤海农业集团有限公司,天津 301800
- 折叠
摘要
通过连续两年田间试验研究了不同沼液用量(0、75、150、225、300 m3/hm2)和化肥(常规、减半)配施对水稻生长和土壤养分的影响.结果表明:沼液用量150m3/hm2+化肥减半处理的水稻产量最高,第1年和第2年水稻产量较常规纯化肥处理分别提高了 2.13％和5.79％.沼液用量150 m3/hm2+常规化肥处理水稻茎叶生物量最高,沼液用量超过225 m3/hm2时,水稻产量、株高、茎叶生物量降低.沼液施用提高了土壤的养分含量,且随着沼液用量的增加而提高,相同化肥施用量时,土壤有机质含量提高8.93％～30.04％,碱解氮含量提高4.36％～39.90％,有效磷含量提高14.86％～39.89％,速效钾含量提高9.17％～41.25％.沼液施用对土壤pH没有显著影响,提高了土壤EC值,但相同处理的第2年土壤EC值没有累积提高.综上,在本试验中沼液用量150 m3/hm2+常规化肥减半为最佳施肥处理.
Abstract
The effects of different biogas slurry dosages(0,75,150,225,300 m3/hm2)and chemical fertilizer(conventional and halved)on rice growth and soil nutrients were studied through field experiments for two consecutive years.The results showed that the rice yield was the highest when the amount of biogas slurry was 150 m3/hm2+halved chemical fertilizer,and compared with the conventional pure chemical fertilizer treatment,the rice yield increased by 2.13％and 5.79％in the first and second years respectively.The biomass of rice stems and leaves was the highest when the amount of biogas slurry was 150 m3/hm2+conventional chemical fertilizer.When the amount of biogas slurry exceeded 225 m3/hm2,the yield,plant height and biomass of rice stem and leaves decreased.The application of biogas slurry increased the nutrient content of soil,which increased with the increase of application amount.At the same application amount of chemical fertilizer,the content of soil organic matter increased by 8.93％～30.04％,the content of alkali hydrolyzable nitrogen increased by 4.36％～39.90％,the content of available phosphorus increased by 14.86％～39.89％,and the content of available potassium increased by 9.17％～41.25％.Biogas slurry application had no significant effect on soil pH but increased soil EC value;however,soil EC value did not increase in the second year of the same treatment.In conclusion,in this experiment,the amount of biogas slurry 150 m3/hm2 and halved conventional chemical fertilizer is is the best fertilization treatment.
关键词
沼液/水稻/土壤/产量Key words
biogas slurry/rice/soil/yield引用本文复制引用
基金项目
天津市科技计划(21ZYCGSN00090)
天津市科技计划(18ZXYENC00130)
天津市现代农业产业技术体系建设项目(ITTPRS2021010)
出版年
2024
NETL
NSTL
万方数据