华北农学报2012，Vol.27Issue(5)：230-238,9.
水氮供应对温室黄瓜干物质积累、养分吸收及分配规律的影响
Effects of Water and Nitrogen Supply on Dry Matter Accumulation,Nutrient Uptake and Distribution in Greenhouse Winter-spring Cucumber
摘要
Abstract
A two-year experiment with different irrigation rates and nitrogen application rates was conducted in greenhouse winter-spring cucumber. Dry matter accumulation,nutrient uptake,water and nitrogen use efficiency and yield were investigated with treatments in furrow irrigation patterns under film covered. The results showed that characteristics of dry matter accumulation and nutrient uptake were similar and looked like "S" curve. The fruiting stage was the critical stage for dry matter accumulation and nutrient uptake. The root dry matter was not affected significantly by different water and nitrogen application patterns, but leaves and stems and fruits dry matter were affected during fruiting stage. Optimized water and nitrogen application rates improved the dry matter accumulation and the ratio to the total dry matter,especially the fruit accumulation, but decreased the ratio of root to shoot. The nutrient uptake was absorbed as N 396～490 kg/ha,P 93 ～ 127 kg/ha,K 516 ～ 529 kg/ha,with an order of K > N > P to attain the cucumber yield of 150 to 200 t/ha. The N: P: K ratio of nutrient uptake was 1: 0. 21: 1. 17 for optimized water and nitrogen application rates. Both nitrogen fertilization and water-reduced could improve the dry matter,nitrogen uptake. Compared with conventional water and nitrogen supply, optimized water and nitrogen application rate improved dry matter accumulation, nitrogen uptake and the ratio of nitrogen in fruit. The ratio of P and K to N were increased but the uptake of P and K were decreased for optimized treatment. So optimized water and nitrogen supply improved nitrogen use efficiency, partial nitrogen production efficiency, and the water use efficiency, while decreased luxury uptake of phosphorous and potassium for cucumber.关键词
水氮供应/干物质积累/养分吸收/水氮利用效率/黄瓜Key words
Water and nitrogen supply/ Dry matter accumulation/ Nutrient uptake/ Water and nitrogen use efficiency/ Yield分类
农业科技引用本文复制引用
王丽英,张彦才,李若楠,武雪萍,翟彩霞,陈丽莉,吴会军..水氮供应对温室黄瓜干物质积累、养分吸收及分配规律的影响[J].华北农学报,2012,27(5):230-238,9.基金项目
国家重点基础研究发展计划("973"计划)(2007CB109305) （"973"计划）
河北省科技支撑计划项目(11220701D （）
09276707D) （）
