摘要
为探究稻、蛙、鱼复合种养模式对稻田土壤理化性质和水稻产量的影响,于2022年5—10月在长沙县路口镇明月村开展大田试验,以不施化肥农药的水稻单作(CK)和常规水稻单作(HX)为对照,设置稻+牛蛙+麦穗鱼(DNY)、稻+黑斑蛙+麦穗鱼(DHY)2种复合种养模式,对不同模式土壤的养分含量、理化性质和水稻产量进行比较分析。结果表明:在土壤养分方面,DHY和DNY处理均能提高土壤中的速效养分含量,因为蛙类与鱼类的活动可以加快全量养分的溶解,从而提高土壤中的养分含量;在土壤物理性质方面,稻鱼共生82 d后,与HX处理相比,DHY处理的土壤总孔隙度、土壤毛管持水量、土壤毛管孔隙度分别提高了14.7%、31.7%、16.6%,容重则降低了7.1%,且差异均达到显著水平;在水稻产量方面,各处理的实际产量均无显著差异。综上所述,稻—蛙—麦穗鱼复合种养模式有利于提高土壤养分,增加土壤有机质含量,改善土壤结构,且能够达到稳产的目的。
To explore the impact of the integrated rice,frog,and fish farming model on the physical and chemical properties of paddy soil and rice yield,a large-scale field experiment was conducted from May to October in 2022 in Mingyue Vi-llage,Lukou Town,Changsha County.The rice monoculture without chemical fertilizers and pesticides(CK)and the con-ventional rice monoculture(HX)were used as controls,and two integrated farming models,rice+bullfrog+Pseudorasbora parva(DNY)and rice+spotted frog+Pseudorasbora parva(DHY),were established.The nutrient content,physical and chemical properties,and rice yield of the soil under different models were comparatively analyzed.The results showed that in terms of soil nutrients,both DHY and DNY treatments could enhance the availability of nutrients in the soil.The activities of frogs and fish can accelerate the dissolution of total nutrients,thereby increasing the nutrient content in the soil,but there was no significant difference in the organic matter content of the soil.Regarding the physical properties of the soil,compared with the HX treatment,the total porosity,capillary water-holding capacity and capillary porosity of the soil in the DHY treatment increased by 14.7%、31.7%and 16.6%,respectively,while the bulk density decreased by 7.1%,and all differences reached significant levels,indicating an improvement in capillary water-holding capacity,total porosity,capillary porosity,and a reduction in bulk density.In terms of rice yield,the thousand-grain weight in the DNY treatment was higher than that in the HX and CK treatments,but the difference was not significant,and there was no significant difference in the actual yield among all treatments.In summary,the integrated rice,frog,and wheat-ear fish farming model is beneficial for improving soil nutrients,increasing soil organic matter content,improving soil structure,and achieving stable prduction goals.
作者
伍世豪
罗雨聪
黄璜
陈灿
王忍
张印
张泉
马学虎
WU Shihao;LUO Yucong;HUANG Huang;CHEN Can;WANG Ren;ZHANG Yin;ZHANG Quan;MA Xuehu(College of Agronomy,Hunan Agricultural University,Changsha,Hunan 410128,China;Hunan Engineering Research Center of Rice Field Ecological Planting and Breeding,Changsha,Hunan 410128,China)
出处
《作物研究》
2024年第4期249-255,共7页
Crop Research
基金
国家重点研发计划项目(2018YFD0301003)。
关键词
水稻
复合种养
土壤
理化性质
产量
rice
compound cultivation
soil
physical and chemical properties
yield
