植物营养与肥料学报201319(6）：1287-1296 Journal of Plant Nutrition and Fertilizer
doi=10. 11674/zwyf. 2013. 0602
不同水分管理下覆膜旱植稻营养特性及其与
光合生理的相关性研究
陈恺林，刘洋1，张玉烛1*，方宝华，黄泽辉”，刘功朋？，李超
（1湖南省水稽研究所，湖南长沙410125；2湖南农业大学，湖南长沙410125）
摘要：本研究以超级杂交稽P88s/1128为材料，研究了覆膜裁培下不同水分管理方式对超级杂交稽产量及钙（Ca）、硅（SiO2）吸收特性的影响，并探讨了硅、钙吸收总量与蒸腾速率之间的相关性。结果表明.覆膜裁培条件下早作水稽产量比无膜裁培提高了3.64%；覆膜栽培下湿润处理后穗部钙吸收量为1.58kg/hm，显著高于灌水处理；栽培模式和水分管理2种处理因子均对水稻后期钙、硅的积累量具有一定的影响且存在显著的交互作用；覆膜早植裁培下超级稽后期蒸腾速率与穗部硅的吸收呈显著正相关（r=0.8561°，P=0.0066）。覆膜和后期灌水提高了群体蒸腾速率，有利于营养物质的吸收，同时促进了茎叶中储存的碳水化合物向穗部转运，另一方面，蜡熟期过高
的蒸腾速率会导致茎秆中碳水化合物过量输出，可能带来倒伏风险。关键词：覆膜；水分；钙；二氧化硅；蒸腾速率；相关性
中图分类号：S511.01；S365
文献标识码：A
文章编号：1008505X(2013)06128710
Relationshipsbetweennutritionuptakecharacteristics andphotosynthetic physiology under different water managements of mulching upland rice
CHEN Kai-lin', LIU Yang', ZHANG Yu-zhu'*, FANG Bao-hua', HUANG Ze-hui', LIU Gong-peng”, LI Chao(1 Hunan Rice Research Institute, Changsha 410125, China; 2 Hunan Agricultural University, Changsha 410128, China)
Abstract : Absorption characteristics of Ca and SiO 2 and transpiration rate under mulching cultivation of upland rice were studied by using P88s/1128 as material and with different water managements as treatment . The result shows that the mulching has a significant effect on yield but not on yield component.The absorption amount of calcium in panicle is 1. 58 kg/ha under the mulching and moist treatment which is significantly higher than that of the irrigation treatment.The cultivation mode and water management have some influence on the accumulation of SiO and Ca at the late stage, and the interaction of these two processing factors is significant . The correlation between the SiO2 quantity of panicle ahsorbed and transpiration rate is significant（r =0.8561,P =0.0066).Mulching and irrigation at the later stages has promoting effects for transpiration rate which is beneficial for absorbing nutrition and carbohydrate translation from stem to panicle . But it would easy to lodging if the transpiration rate so high that carbohydrate in the stems exports excessively -
Key words mulchingwaterCaSio,Transpiration ratecorrelation
近年来，农业旱灾明显加重，预计我国未来10 ~50年于旱面积将有扩大趋势，出现阶段性于旱和季节性连续干旱的可能性增大，给农业生产和粮食
收稿日期：2013-01-23
接受日期：2013-07-02
安全带来严重威胁[1-2]。水稻覆膜旱植采用无水层湿润栽培模式，较常规水栽培节水80%左右，是一项高效节水栽培措施[3-5]
基金项目：“十二·五"科技支撑计划重大项目粮食丰产科技工程“长江中游南部（湖南）双季稻持续丰产高效技术集成创新与示范
）
作者简介：陈恺林（1955一），男，湖南长沙人，副研究员，主要从事水稻高效裁培技术研究。E-mail：chenkailin123@sina.com
刘洋与第一作者同等贡献。E-mail：liuyang5339@sina.
：通信作者E-mail：yuzhuzhang@hotmail.com