作物研究2019，Vol.33Issue(1)：1-8,8.DOI:10.16848/j.cnki.issn.1001-5280.2019.01.01
氮肥运筹模式对双季稻植株干物质积累和产量的影响
Effects of Different Nitrogen Application Patterns on Dry Matter Accumulation and Yield of Rice in Double Cropping Rice Field
摘要
Abstract
Nitrogen ( N) application patterns is an important management measures that affects rice growth, photosynthetic material production and grain yield. Therefore, in order to investigate the characteristics of dry matter accumulation and grain yield in rice ( Oryza sativa L.) with different N application patterns in the double-cropping rice system, the dry matter accumulation and distribution, grain yield of early rice and late rice were analyzed under application of N was 120kg/hm2 of early rice and application of N was 210 kg/hm2 of late rice ( N120+210), application of N was 150 kg/hm2 of early rice and application of N was 180 kg/hm2 of late rice ( N150+180), application of N was 180 kg/hm2 of early rice and application of N was 150 kg/hm2 of late rice ( N180+150), application of N was 210 kg/hm2 of early rice and application of N was 120 kg/hm2 of late rice ( N (210 + 120) ), without application of N of early and late rice as a control (CK). The results showed that the tillering numbers of rice with N150+180 treatment were higher than that of the other treatments at the main growth stages of early rice and late rice. And the leaf area index with different treatments was N180+150> N150+180> N (210 + 120)> N120+210> CK and N150+180> N120+210> N180+150> N (210 + 120)> CK at the main growth stages of early rice and late rice, respectively. Meanwhile, the root dry weight of rice plant with N (210 + 120) and N120+210 treatments were higher than that of the CK treatment at the main growth stages of early rice and late rice, and the stem and leaves dry weight of rice plant with N (210 + 120) and N150+180 treatments were higher than that of the CK treatment at the main growth stages of early rice and late rice, the panicle dry weight of rice plant with N150+180 and N180+150 treatments were higher than that of the CK treatment at the main growth stages of early rice and late rice, respectively. The results indicated that there were no significantly differences in spikelet number per panicle and 1000 grain weight of rice plant among different treatments. The grain yield of early rice and late rice with N180+150 and N150+180 treatments were higher than that of the other treatments, respectively. Compared with CK treatment, the grain yield of early rice and late rice with N150+180 treatments increased by 1849. 5 kg/hm2 and 1879. 5 kg/hm2 respectively. Compared with other treatments, the different part of dry matter accumulation of rice plant with N150+180 treatment were reasonable distribution, and improved grain yield and yield components of rice plant.关键词
水稻/氮肥/运筹模式/干物质/产量Key words
rice/nitrogen/application patterns/dry matter/grain yield分类
农业科技引用本文复制引用
徐一兰,付爱斌,刘唐兴..氮肥运筹模式对双季稻植株干物质积累和产量的影响[J].作物研究,2019,33(1):1-8,8.基金项目
湖南省自然科学基金(2017JJ3133,2017JJ1018) （2017JJ3133,2017JJ1018）
湖南省教育科学"十三五"规划课题(XJK18CZY047) （XJK18CZY047）
湖南省农业农村厅科技计划项目(19NYT02) （19NYT02）
