棉花学报2011，Vol.23Issue(6)：537-544,8.
施氮量对不同熟期棉花品种的生物量和氮素累积的影响
Effects of Nitrogen Rates on Biomass and Nitrogen Accumulation of Cotton with Different Varieties in Growth Duration
摘要
Abstract
To investigate the effects of nitrogen application rate on cotton biomass accumulation, nitrogen uptake, and nitrogen fertilization recovery rate in the cotton extremely early-maturation region, field experiment was carried out in Liaoyang, Liaon-ing, using two cotton cultivars Liaomian 19 and NuCOTN33B, with three nitrogen levels (0, 240, 480 kg-hm-2, respectively). The accumulated dynamic of biomass and nitrogen of cotton were described by Logistic curve equation. Nitrogen application rate changed biomass and nitrogen accumulation characteristics of cotton, and then affected the yield and quality of cotton. The results showed the beginning of speed nitrogen accumulation were 10-12 days earlier than that of biomass. With nitrogen at 240 kg-hm2, biomass and nitrogen accumulation amount was the highest, eigenvalues of the dynamic accumulation model of cotton was the most harmonious, nitrogen recovery rate was the highest, thus lint yield was highest and the cotton fiber quality was the best. At 480 kg-hm"2 of nitrogen, accumulation amount and rate of biomass and nitrogen decreased, and the distributive indices of biomass in reproductive organ and lint yield reduced.关键词
东北地区特早熟棉区/棉花/施氮量/生物量/产量Key words
The cotton extremely early-maturation region in Northeast China/ cotton/ nitrogen rate/ biomass/ yield分类
农业科技引用本文复制引用
王子胜,除敏,刘瑞显,吴晓东,朱鹤,陈兵林,周治国..施氮量对不同熟期棉花品种的生物量和氮素累积的影响[J].棉花学报,2011,23(6):537-544,8.基金项目
国家自然科学基金(30771279,30971735)和公益性行业(农业)科研专项(nyhyzx07-005-18,200903003) （30771279,30971735）
