作物学报2016，Vol.42Issue(3)：437-445,9.DOI:10.3724/SP.J.1006.2016.00437
施硅量对甬优系列籼粳交超级稻产量及相关形态生理性状的影响
Effects of Silicon Fertilizer Rate on Grain Yield and Related morphological and Physiological Characteristics in Super Rice of Yongyou Japonica/indica Hy-brids Series
摘要
Abstract
A field experiment was conducted using Yongyou 12 and Yongyou 15 with five treatments of 0, 75, 150, 225, and 300 kg ha–1 silicon application. Results indicated that grain yield of Yongyou 12 and Yongyou 15 increased firstly and then decreased with increase of the silicon application rate. The highest grain yield of both Yongyou 12 and Yongyou 15 achieved at the silicon rate of 225 kg ha–1. Analysis on yield components showed that number of panicles of Yongyou 12 and Yongyou 15 increased with the increase of silicon application rate, while 1000-grain weight and seed-setting rate were both decreased with the increased sili-con application rate. With the increase of silicon application rate, number of tillers and stems of Yongyou 12 and Yongyou 15 at jointing, heading, and maturity stages increased synchronously. Panicle rate of Yongyou 12 and Yongyou 15 increased firstly and then decreased with the increase of silicon application rate, and the peak value was at the silicon rate of 225 kg ha–1. With the increase of silicon application rate, dry matter weight and leaf area index at jointing, heading, and maturity stages as well as dry matter accumulation and leaf area duration from jointing to heading and from heading to maturity increased. With the increase of silicon application rate, leaf length and leaf width of the 1st leaf, 2nd leaf, and 3rd leaf of Yongyou 12 and Yongyou 15 increased synchronously, while leaf basal angle and dropping angle of the 1st leaf, 2nd leaf, and 3rd leaf of Yongyou 12 and Yongyou 15 decreased synchronously. Moreover, compared with check (0 kg ha–1), silicon application significantly increased dry matter per stem, per sheath, and per length of stem. At last, the technology on the effective application of silicon was discussed.关键词
硅/甬优籼粳交超级稻/产量/产量形成特征Key words
Silicon/Super rice of Yongyou japonica/indica hybrids series/Grain yield/Characteristics of yield formation引用本文复制引用
韦还和,霍中洋,许轲,魏海燕,郭保卫,孟天瑶,李超,张洪程,史天宇,马荣荣,王晓燕,杨筠文,戴其根..施硅量对甬优系列籼粳交超级稻产量及相关形态生理性状的影响[J].作物学报,2016,42(3):437-445,9.基金项目
本研究由农业部超级稻专项(02318802013231),国家公益性行业(农业)科研专项(201303102),宁波市重大科技项目(2013C11001),江苏省重点研发项目(BE2015340)和江苏省普通高校研究生科研创新计划项目(KYLX15_1371)资助。This research was supported by the Special Program of Super Rice of the Ministry of Agricultural (02318802013231), China Special Fund for Agro-scientific Research in the Public Interest (201303102), the Great Technology Project of Ningbo City (2013C11001), the Key Projects of Jiangsu Province (BE2015340) and Innovative Training Program for Jiangsu University (KYLX15_1371) （02318802013231）
