植物营养与肥料学报2010,16(4)：947-952 Plant Nutrition and Fertilizer Science
不同类型抗虫棉品种的产量表现和氮素营养
效率研究
董合忠，李维江，辛承松，唐薇，张冬梅（山东棉花研究中心，山东省棉花栽培生理重点实验室，山东济南250100）
摘要：以7个转Bt(Bacllustharingiensis）基因抗虫棉（GossypiumhirsutumL）品种（美国品种33B，国产常规棉鲁棉研率。结果表明，国产常规抗虫棉品种平均比美国品种33B增产12.5%（临清）和28.3%（东营），抗虫杂交棉则比常规棉增产9.7%。早发型棉花品种（鲁棉研21和29）每生产100kg皮棉所吸收的氮素量比后发型品种（鲁棉研22 和28)少13.9%，营养效率系数高20.4%；杂交种（鲁棉研15和25)每生产100kg皮棉所吸收的氮索量比常规种少13.8%，营养效率系数高16.8%。早发型棉花品种的氮素营养效率高于后发型，杂交种的氮素营养效率高于常规种。选用棉花杂交种或早熟、高产、经济系数高的常规种，创造正常的棉花熟相是提高氮素营养效率的重要途径。
关键词：抗虫棉；氮素；营养效率；产量
中图分类号：S561.01
文献标识码：A
文章编号；1008505X(2010)040947-06
Genotypicvariationsofyieldsandnitrogennutritionefficiencies
inBttransgeniccotton
DONG He-zhong, LI Wei-jiang, XIN Cheng-song,TANG Wei, ZHANG Dong-mei
(Cotton Research Center, Shandong Academy of Agricultural Sciences/
Shandong KeyLab for Cotton Culture and Physiology,Jinan,Shandong 250100, China)
Abstract: Seven Bt (Bacillus thuringiensis)transgenic cotton (Gossypium hirsutum L. )cultivars including 33B from USA, domestic inbred cultivars SCRC21, SCRC22, SCRC28, and SCRC29, and domestic hybrids SCRC15 and 25 were grown in Linqing and Dongying, and managed under normal fertilization. Their yields and nitrogen nutrition efficiencies( NNE) were comparatively examined. The results show that the average yields of the 4 domestic inbred cultivars are 12. 5% (Linqing)and 28. 3% (Dongying) higher than those of 33B, and are about 9. 7% lower than those of the hybrids. Total quantity of nitrogen( TQN) for producing 100 kg fiber of the early-developed( ED) culti-vars is 13. 9% lower than that of the later-developed(LP) cultivars, and the nitrogen nutrition efficiency coefficient( NNEC)of ED is 20. 4% higher than that of LP. TQN of the hybrids is 13. 9% lower than that of the inbred culti-vars, resulting in 16. 8% increase in NNEC relative to that of the inbred cultivars. These results suggest that NNE of ED and the hybrids is better than that of LD and the inbred. NNE can be improved by adoption of hybrid or inbred cultivars with early maturity, better yield and high economic index. NNE is closely related to maturity per-formance. Realization of normal maturity performance with proper agronomic practice is also important for improving NNE.
Key words: Bt transgenic cotton; nitrogen; nutrition efficiency; yield
收日期：2009-07-27
接受日期：2009-1021
基金项目：国家白然科学基金（30971720）；现代农业产业技术体系建设专项资金；公益性行业（农业）科研专项（nyhyz07-005-02）；山东省
农业良种工程重大课题(2008L2005-05）资助。
作者简介：董合忠（1965—），男，山东五莲县人，博士，研究员，主要从事棉花裁培生理研究。Tel；0531-83179255，E-mail：donghz@sas.ac.cn 万方数据