N、P、K肥对向日葵干物质积累及产量的影响  

The Effect of the NPK Fertilizer on Dry Matter Accumulation and Yield of Oil-sunflowers

作　　者：张君[1] 段玉[1] 赵维国 妥德宝[1] 赵沛义[1] 李焕春[1] 安昊[1] 

机构地区：[1]内蒙古农牧业科学院,内蒙古呼和浩特010031 [2]扎兰屯农业技术推广中心,内蒙古扎兰屯162500

出　　处：《内蒙古农业科技》2013年第6期61-63,共3页Inner Mongolia Agricultural Science and Technology

基　　金：国家现代农业向日葵产业技术体系资助项目

摘　　要：为进一步提高内蒙古自治区的优势作物向日葵的产量及肥料利用率,试验选用油用型向日葵品种S31作为供试材料,采用田间试验和室内分析化验相结合的方法,研究了NPK肥不同用量条件下向日葵的叶面积指数变化、干物质量积累规律及NPK肥效。结果表明:向日葵叶面积指数随生育时期推进呈单峰曲线变化趋势。向日葵各器官及植株干物质量均呈"S"型增长趋势,NPK平衡施肥干物质积累量最高。采用推荐平衡施肥向日葵产量显著提高,施用化肥的增产效果为:氮肥>钾肥>磷肥,影响向日葵产量的主要因素是氮肥。In order to improve sunflower＇s yield and fertilizer utilization, the oil-sunflower variety named S31 was choose to study , the regularity of leaf area index variation, dry matter accumulation and the effect of NPK fertilizer were analyzed by the methods field experiments and indoor chemical analysis. The results showed that： the leaf area index changed as a single peak cure during the whole growth period, and the organ and the plant DM accumulation process of sunflower showed ＂S＂ curve. In the OPT treatment, the DM accumulation reached to the maximum. Balanced fertilization increased the sunflower yield with the fertilizer effect order N 〉 P 〉 K and the N nutrient is the most important factor for the sunflower yield.

关 键 词：向日葵 NPK肥 干物质积累 产量 

分 类 号：S565.5[农业科学—作物学]