• ISSN 1008-505X
  • CN 11-3996/S
赵清, 沙炎, 王术, 陈涛涛, 迟道才. 斜发沸石对干湿交替条件下水稻产量和氮累积的影响[J]. 植物营养与肥料学报. DOI: 10.11674/zwyf.2023429
引用本文: 赵清, 沙炎, 王术, 陈涛涛, 迟道才. 斜发沸石对干湿交替条件下水稻产量和氮累积的影响[J]. 植物营养与肥料学报. DOI: 10.11674/zwyf.2023429
ZHAO Qing, SHA Yan, WANG Shu, CHEN Tao-tao, CHI Dao-cai. Effects of Clinoptilolite on yield and nitrogen accumulation of rice under alternate wetting and drying irrigation[J]. Journal of Plant Nutrition and Fertilizers. DOI: 10.11674/zwyf.2023429
Citation: ZHAO Qing, SHA Yan, WANG Shu, CHEN Tao-tao, CHI Dao-cai. Effects of Clinoptilolite on yield and nitrogen accumulation of rice under alternate wetting and drying irrigation[J]. Journal of Plant Nutrition and Fertilizers. DOI: 10.11674/zwyf.2023429

斜发沸石对干湿交替条件下水稻产量和氮累积的影响

Effects of Clinoptilolite on yield and nitrogen accumulation of rice under alternate wetting and drying irrigation

  • 摘要:
    目的 斜发沸石作为一种优良的土壤改良剂,因其具有改善土壤养分、提高水稻产量和减少氮素流失等积极作用而广泛用于水稻生产系统中。通过田间试验,探究了干湿交替灌溉条件下,斜发沸石对水稻氮素吸收利用和产量的长期影响。
    方法 在2017—2021年连续5年进行了原位大田试验。试验设计为随机区组试验,设置常规淹灌条件下不施斜发沸石(ICFZ0),干湿交替灌溉下不施斜发沸石(IAWDZ0)和干湿交替灌溉下施加10 t/hm2斜发沸石(IAWDZ10)3个处理,斜发沸石于2017年施入土壤,之后4年(2018—2021)不再施用。水稻生育期内定期取0—30 cm土壤样品用于测定无机氮含量,每年水稻成熟期,调查籽粒生物量以及主要产量构成因素,计算地上部氮累积量、氮肥偏生产力。
    结果 ICFZ0和IAWDZ0处理的水稻产量、地上部氮累积量和氮肥偏生产力差异均不显著。与ICFZ0和IAWDZ0处理相比,IAWDZ10处理连续5年均显著提高了地上部氮累积量和产量,但增长率随定位试验的延长有所下降。IAWDZ10 处理氮肥偏生产力较ICFZ0和IAWDZ0处理分别增加了9.67~13.44 kg/kg和5.53~9.55 kg/kg,产量分别增加了1.26~2.42 t/hm2和1.00~1.72 t/hm2。与IAWDZ0相比,IAWDZ10处理地上部干物质累积量在拔节孕穗期、抽穗开花期、乳熟期和成熟期分别增加了20.96%~31.24%、16.89%~30.44%、17.87%~25.45%和13.43%~21.12%,地上部氮累积量分别增加了19.92%~47.14%、14.90%~43.88%、21.68%~31.37%和7.18%~30.27%。IAWDZ0与ICFZ0处理土壤无机氮含量差异不显著,IAWDZ10处理土壤无机氮含量最高,较IAWDZ0处理增加了19.88%~40.96%。在分蘖―穗肥阶段,5年间IAWDZ10处理的土壤NH4+-N含量较ICFZ0和IAWDZ0处理分别增加了31.83%~48.84%和28.35%~52.80%。IAWDZ0和ICFZ0处理收获后土壤全氮含量差异不显著,IAWDZ10较ICFZ0处理显著提高了收获期土壤全氮含量,提升幅度为9.27%~11.41%,这表明随着时间的延长,斜发沸石并不会对土壤养分产生负面影响,反而对土壤养分具有长期改善的作用。
    结论 在干湿交替灌溉条件下,一次性施用斜发沸石可连续多年起到提高水稻生育期土壤铵态氮含量、增加土壤全氮的效果,进而促进水稻氮吸收、提高氮肥偏生产力和产量。因此,斜发沸石可用于新型灌溉技术下提高水稻产量、维持稻田可持续利用。

     

    Abstract:
    Objectives Clinoptilolite has been widely used as a soil amendment in rice production due to its positive effects of improving soil nutrients and decreasing N losses. We carried out a located field experiment to investigate the long-term effects of clinoptilolite on nitrogen uptake and yield of rice under alternate wetting and drying irrigation (AWD)
    Methods The located rice field experiment was conducted consecutively from 2018 to 2021, using a completely randomized block design. The treatments included no clinoptilolite addition under continuous flooding irrigation (ICFZ0), no clinoptilolite addition under AWD (IAWDZ0), and 10 t/hm2clinoptilolite addition under AWD (IAWDZ10), clinoptilolite was applied in 2017 and did not apply later on. 0-30 cm soil samples were collected regularly during rice growing season for determination of soil inorganic nitrogen content. Rice plant and grain biomass and nitrogen content were investigated for calculation of aboveground N accumulation and N partial factor productivity (NPFP).
    Results ICFZ0 and IAWDZ0 treatments were recorded similar yield, aboveground N accumulation, and PFPN. In spite of a slight decline, IAWDZ10 significantly increased rice aboveground N accumulation and grain yield for five consecutive years, compared to ICFZ0. The NPFP in IAWDZ10 was 9.67−13.44 kg/kg and 5.53−9.55 kg/kg higher than in ICFZ0 and IAWDZ0, the grain yield was 1.26~2.42 t/hm2 and 1.00~1.72 t/hm2 higher than in ICFZ0 and IAWDZ0, respectively. The aboveground biomass in IAWDZ10 was 20.96%−31.24%, 16.89%−30.44%, 17.87%−25.45%, and 13.43%−21.12% higher than in IAWDZ0 jointing-booting stage, heading-flowering stage, milky ripening stage, and maturing stage, respectively. The aboveground N accumulation in IAWDZ10 was 19.92%−47.14%, 14.90%−43.88%, 21.68%−31.37%, and 7.18%−30.27% higher than in IAWDZ0 at jointing-booting stage, heading-flowering stage, milky ripening stage and maturing stage, respectively. IAWDZ0 was tested similar soil inorganic nitrogen with ICFZ0 treatment, while IAWDZ10 treatment was tested 19.88%−40.96% higher inorganic nitrogen than IAWDZ0 treatment. The soil NH4+-N content in IAWDZ10 was 31.83%−48.84% and 28.35%−52.80% higher than in ICFZ0 and IAWDZ0 from tillering to panicle fertilizer stage, respectively. There was no significant difference between IAWDZ0 and ICFZ0 treatment in soil total nitrogen content after harvest. There was no significant difference in soil total nitrogen between IAWDZ0 and ICFZ0. IAWDZ10 significantly increased soil total N by 9.27%−11.41% after harvest, compared with ICFZ0. This indicated thatclinoptilolite did not negatively affect soil nutrients over time, but instead had a long-term effect on improving soil nutrients.
    Conclusions Under alternate wetting and drying irrigation, applying clinoptilolite in large quantities has a lasting and stable effect on improving soil seasonal NH4+ N and total N content, thereby increasing rice aboveground N accumulation, NPFP, and yield continuously. Clinoptilolite application is commanded as a green and efficient measurement for sustainable agriculture.

     

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