两系法杂交稻安全制种的水热传输模型及其应用  

MULTI-MODEL ESTABLISHMENT AND APPLICATION FOR WATER AND HEAT TRANSFER ON SAFEGUARDING SEED PRODUCTION OF TWO-LINE HYBRID RICE

作　　者：胡凝[1] 吕川根[2] 姚克敏[1] 夏士健[2] 

机构地区：[1]南京信息工程大学应用气象学系,南京210044 [2]江苏省农业科学院粮食研究所,南京210014

出　　处：《气象科学》2007年第2期196-201,共6页Journal of the Meteorological Sciences

基　　金：国家自然科学基金项目(编号:30370830)资助

摘　　要：针对两系杂交稻制种易遇夏季低温危害制种纯度的技术瓶颈,为正确采用以水调温预防技术,本文依据热量平衡原理,建立了制种稻田的水热传输多层模型。经实测资料检验,模型稳定、可靠。对模型输入不同灌水参数的计算结果表明:20 cm气温(不育系敏感期的幼穗高度)随着净辐射通量、灌水深度、进水及出水口水温的升高而增加,增温幅度受这些因子的综合影响。要合理的利用水资源必须考虑多种因子的相互作用。对育性的实测表明,以水调温对防御夏季低温,提高制种纯度效果良好。It was the key problem that two-line hybrid rice met low temperature during seed production,which reduced the purity of seed. For technique of heating by water was a right measure adopted to depend against low temperature harm,multi-model for water and heat transfer was estimated by the princi- ple of heat balance,which is checked by measured data and approved that the model is reliable. By inputting the different irrigation parameters, the results showed that along with net radiation, irrigation depth, water temperature at infalls and outfalls going up,air temperature at 20 cm gradually went up. To irrigate ration- ally, multi-factor interactions must be considered. In the present experiment, pollens fertility and self-fertilized seed set approved that the techniques were feasible and effective for safeguarding seed production of two-line hybrid rice.

关 键 词：模型 灌水 培矮64S 

分 类 号：S162[农业科学—农业气象学]