期刊论文

Effects of Machine-transplanting Synchronized with One-time Precision Fertilization on Nutrient Uptake and Use Efficiency of Double Cropping Rice

Peng, J.

中文

中国水稻科学

1001-7216

2019

33

5

436-446

10.16819/j.1001-7216.2019.8084

国家重点研发计划资助项目(2017YFD200703-3) 国家水稻产业技术体系资助项目(CARS-01-26)。

本校为第一且通讯机构

【目的】为保证水稻施肥的准确性,揭示水稻机插与同步一次性侧深减量施肥的养分利用特征,为机插双季稻的氮(N)肥高效利用提供依据。【方法】在典型双季稻种植区,以测土配方施肥量为依据,结合精量施肥机,2017–2018年研究机插同步一次性精量施肥对双季稻养分吸收和利用的影响。【结果】与常规施肥处理相比,机插同步一次性减N 10%~30%处理早稻N、P、K累积量分别提高7.9%~11.7%、9.4%~25.9%和2.0%~6.5%(2017),8.2%~15.0%、9.0%~12.1%和14.0%~18.1%(2018);晚稻分别提高–0.6%~5.7%、9.1%~14.4%和3.7%~19.6%(2017),6.1%~8.5%、9.4%~19.3%和18.7%~22.2%(2018);早稻N肥吸收利用率(NRE)、N肥农学利用率(...

[Objective] Our aim is to ensure the precision in rice fertilization, and to reveal the nutrient utilization characteristics of machine-transplanted rice under one-time, one-side deep fertilization with reduced nitrogen (N) application level and to improve the nitrogen utilization efficiency for double-cropping rice. [Method]Field experiments (2017-2018) were conducted using soil-tested formulated fertilization with precise fertilizer distributor to study the effects of one-time precision fertilization on nutrient absorption and utilization of ...