期刊论文

Effect of Phosphorus Application on Activity of Root Acid Phosphatase and Yield of Rice under Oxygenatio

中文

灌溉排水学报

1672-3317

2019

38

7

32-37

10.13522/j.cnki.ggps.2018347

作物种质创新与资源利用重点实验室科学基金开放项目(15KFXM04) 湖南省教育厅重点项目(77A094) 湖南省科技计划项目(2018JJ3243) 国家国际科技合作专项(2013DFG91190) 国家自然科学基金项目(31272248,31401951) 国家水体污染控制与治理科技重大专项项目(2014ZX07602-004).

本校为第一机构

【目的】探讨水稻根系酸性磷酸酶活性对增氧条件下施磷量的响应机制,明确水稻产量与根系酸性磷酸酶活性的相关性。【方法】以杂交水稻C两优608为材料进行盆栽试验,设置4个磷肥(P_2O_5)施用水平,P1(0 g/株)、P2(3.23 g/株)、P3(6.46 g/株)、P4(9.70 g/株),分蘖期至灌浆期设置2种灌溉方式,即NO(不增氧灌溉)和O(增氧灌溉),测定了水稻根系酸性磷酸酶活性和产量指标,分析了根系酸性磷酸酶活性与产量的响应关系。【结果】随着施磷量的增加,增氧条件下理论产量、有效穗数与千粒质量均先降低后升高,而每穗粒数呈现先升高后降低趋势;分蘖期与拔节孕穗期根系酸性磷酸酶活性随施磷量的增加而降低,灌浆期根系...

【Objective】The redox in soil controls plant growth and soil nutrient dynamics. The objective of this paper is to experimentally study the effect of phosphorous application and oxygenation on activity of root acid phosphatase and rice yield.【Method】The experiment was conducted in pots. We used the hybrid variety of C Liangyou 608 as model plant and P_2O_5 as the P fertilizer. We examined four P application levels: 0 g/plant (P1), 3.23 g/plant (P2), 6.46 g/plant (P3) and 9.70 g/plant (P4), and two irrigation methods: conventional irrigation w...