[1]陈鑫,刘勤,张刚.太湖地区不同轮作模式对土壤肥力和水稻产量的影响[J].江苏农业学报,2021,(04):874-883.[doi:doi:10.3969/j.issn.1000-4440.2021.04.009]
 CHEN Xin,LIU Qin,ZHANG Gang.Effects of different crop rotation modes on soil fertility and rice yield in Taihu Region[J].,2021,(04):874-883.[doi:doi:10.3969/j.issn.1000-4440.2021.04.009]
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太湖地区不同轮作模式对土壤肥力和水稻产量的影响()
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江苏农业学报[ISSN:1006-6977/CN:61-1281/TN]

卷:
期数:
2021年04期
页码:
874-883
栏目:
耕作栽培·资源环境
出版日期:
2021-08-28

文章信息/Info

Title:
Effects of different crop rotation modes on soil fertility and rice yield in Taihu Region
作者:
陈鑫123刘勤13张刚13
(1.中国科学院南京土壤研究所,江苏南京210008;2.中国科学院大学,北京100049;3.中国科学院常熟农业生态实验站,江苏苏州215555)
Author(s):
CHEN Xin123LIU Qin13ZHANG Gang13
(1.Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, China;2.University of Chinese Academy of Sciences,Beijing 100049, China;3.Changshu Agroecological Experimental Station, Chinese Academy of Sciences, Suzhou 215555, China)
关键词:
水旱轮作绿肥施氮水平土壤肥力水稻产量
Keywords:
upland crop-rice rotationgreen manurenitrogen application levelsoil fertilityrice yield
分类号:
S511.047
DOI:
doi:10.3969/j.issn.1000-4440.2021.04.009
文献标志码:
A
摘要:
为研究太湖流域长期不同轮作方式和施氮水平对稻田土壤肥力指标、水稻产量的影响,设置了轮作方式(休闲-水稻、小麦-水稻、紫云英-水稻、蚕豆-水稻)和施氮水平(0 kg/hm2、120 kg/hm2、180 kg/hm2、240 kg/hm2、300 kg/hm2)2因素。结果表明,与冬季休闲模式相比,绿肥作物轮作模式稳定了土壤pH,提高了土壤含水量和水稳性微团聚体含量,提高了土壤养分含量和微生物生物量氮含量;同时,施肥水平影响了土壤肥力水平,与绿肥作物轮作不施氮相比,适量施氮(120~240 kg/hm2)优化了土壤物理结构,促使养分含量提升,提高了微生物生物量氮含量。进行周年绿肥作物轮作后水稻产量获得一定提升,且在施氮量为120~180 kg/hm2时水稻产量较高。综上所述,绿肥作物轮作模式有效提高了土壤肥力,降低了最佳施氮量,并使水稻产量显著增加。为兼顾养分利用水平、土壤肥力及环境效益、经济效益,推荐将绿肥作物-水稻轮作模式下稻季施氮量降低至120 kg/hm2左右。
Abstract:
To study the effects of long-term different crop rotations and nitrogen application levels on soil fertility indices and rice yield in Taihu basin, two factors of crop rotation (winter fallow-rice rotation, winter wheat-rice rotation, Chinese milk vetch-rice rotation and broad bean-rice rotation) and nitrogen application level(0 kg/hm2, 120 kg/hm2, 180 kg/hm2, 240 kg/hm2, 300 kg/hm2)were settled. The results showed that, compared with winter fallow mode, green manure crop rotation mode could maintain soil pH, increase soil moisture and improve soil water-stable microaggregates content, while contents of soil nutrients and soil microbial biomass nitrogen was also improved. Meanwhile, soil fertility level was influenced by fertilization level, and compared with green manure crop rotation without nitrogen fertilizer, appropriate application of nitrogen fertilizer (120-240 kg/hm2) improved soil physical structure, thus promoted contents of nutrients and microbial biomass nitrogen. Compared with winter fallow mode, rice yield increased under the mode of successive green manure crop rotations, and rice yield was high under 120-180 kg/hm2 nitrogen applications. In summary, green manure crop rotation mode effectively improved soil fertility, decreased the appropriate nitrogen application and significantly increased rice yield. In consideration of balancing nutrient utilization level, soil fertility, environmental benefits and economic benefits, it is recommended to reduce nitrogen application in paddy fields to 120 kg/hm2 under green manure crop-rice rotation mode.

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备注/Memo

备注/Memo:
收稿日期:2020-12-17基金项目:国家重点研发计划(2017YFD0200604);国家自然科学基金(31400464)作者简介:陈鑫(1995-),男,浙江绍兴人,硕士研究生,主要从事土壤养分及土壤微生物变异等相关研究。(E-mail)chenxin@issas.ac.cn通讯作者:刘勤,(E-mail)qliu@issas.ac.cn
更新日期/Last Update: 2021-09-06