摘要
为探明寒地水稻肥密因子对水稻分蘖及产量的影响,采用多元二次旋转回归正交组合方法,研究粳稻垦鉴稻10号在不同时期的施氮量、调节肥施用时期及穴距对其分蘖及产量的影响.结果表明:对分蘖状况影响最大的因子是前期氮肥用量,其次是穴距和调节肥施用时期,再者是前期用氮量与其他因子的互作;与此同时,对分蘖状况各因子与产量的相关分析表明,有效蘖率>蘖穗率>最高蘖数>有效蘖率与群体成穗率互作>最高茎数与群体成穗率互作.因此,根据生产实际,尤其在低温地凉年份,适当加大前期氮肥用量并配合适当的密度以及其他农艺措施促使分蘖早生快发是提高寒地水稻产量的有效途径.
To investigate the effect of fertilization factors and density on rice tiller and yield in cold area,the effect of N-fertilizer dosage at different stages,application stage of regulating fertilizer（RF） and hole spacing（HS） on rice yield,yield components and tiller was discussed by using the method of multiple factors quadratic rotation-regression-orthogonal combination design.The conventional japonica rice variety ＇Kenjiandao 10＇ was used as test material.The results showed that the amount of N-fertilizer in earlier stage had the greatest effect on the tiller,and the next was HS and the application stage of RF,and the third was mutual effect of N-fertilizer application in earlier stage and other factors;Meanwhile,the correlation analysis between each factor of tiller and yield showed that the sequence for the yield effect was effective tiller rateformation of spike from the tillers numbermaximum tiller numbermutual effect of effective tiller rate and spike rate of populationmutual effect of maximum stem number and spike rate of population.Thus,according to actual production,especially in low-temperature and earth cooling year,appropriately increasing the amount of N-fertilizer applied in earlier stage with proper density and other agronomic measures which could promote early growth and quick tillering of tiller,was an effective way for increasing yield of rice in cold area.
出处
《浙江大学学报（农业与生命科学版）》
CAS
CSCD
北大核心
2011年第1期69-76,共8页
Journal of Zhejiang University:Agriculture and Life Sciences
基金
国家科技成果转化"水稻保护性耕作节水栽培新技术体系及配套机具的推广应用"资助项目(2008GB2B200089)
关键词
寒地水稻
氮肥
分蘖状况
产量
rice in cold area
N-fertilizer
tillering situation
yield
