浙江农业学报2026，Vol.38Issue(7)：1313-1326,14.DOI:10.3969/j.issn.1004-1524.20250396
缓释肥及外源物质对再生稻头季籽粒灌浆特性及品质的影响
Effects of slow-release fertilizer and exogenous substances application on grain filling charac-teristics and quality of the main crop in ratoon rice
摘要
Abstract
Fertilization and exogenous substance application have certain effects on rice growth,development,yield,and quality formation.To clarify the effects of slow-release fertilizer and exogenous substances on grain filling charac-teristics and quality of the main crop in ratoon rice,two varieties,Taoyouxiangzhan and Xudao 3,were used as test materials,and four treatments were set up:conventional urea(CK),slow-release fertilizer(SRF),slow-release fer-tilizer+brassinolide(SRF+BR),and slow-release fertilizer+α-naphthaleneacetic acid(SRF+NAA).The grain filling characteristics of the main crop under different treatments and their relationships with rice quality were analyzed,aiming to provide reference for high-yield cultivation of high-quality ratoon rice.The results showed that compared with CK and SRF,the chalky grain rate,chalky area,chalkiness degree,amylose content,and protein content of both varieties under the SRF+BR treatment were significantly reduced.During grain filling,the activities of ADP-glucose pyrophosphorylase(AGPase),sucrose synthase(SuSase),Q-enzyme,and adenosine triphosphatase(ATPase)under SRF+BR were higher than those under CK and SRF,and the grain filling rate was the highest,with relatively small fluctuation throughout the filling process,which was conducive to grain plumpness.Correlation analysis indicated that milled rice rate and gel consistency were significantly or extremely significantly positively cor-related with starch synthesis-related enzyme activities,while appearance quality and amylose starch content were sig-nificantly or extremely significantly negatively correlated with those enzyme activities.In summary,the SRF+BR treatment could increase grain filling rate and starch synthesis-related enzyme activities,promote starch synthesis and accumulation,and thus improve the quality of the main crop in ratoon rice.关键词
再生稻/缓释肥/外源物质/稻米品质/淀粉合成Key words
ratoon rice/slow-release fertilizer/exogenous substances/rice quality/starch synthesis分类
农业科技引用本文复制引用
张丹珂,王丽,李海润,李浩晶,曹静,徐国伟..缓释肥及外源物质对再生稻头季籽粒灌浆特性及品质的影响[J].浙江农业学报,2026,38(7):1313-1326,14.基金项目
河南省自然科学基金(212300410341) （212300410341）
河南省科技攻关项目(242102110169) （242102110169）
河南省科技研发计划联合基金(242103810031) （242103810031）
河南科技大学博士科研启动基金项目(13480108) （13480108）
