不同早、中熟基因型棉花品种的干物质积累及养分吸收规律研究  

Study on the rule of dry matter accumulation and nutrient absorption of different earliness and medium maturing genotypes cultivars of upland cotton

作　　者：李鹏程[1] 董合林[1] 王润珍[1] 刘爱忠[1] 刘爱珍[1] 李如义[1] 

机构地区：[1]中国农业科学院棉花研究所,棉花生物学国家重点实验室,河南安阳455000

出　　处：《中国土壤与肥料》2012年第2期23-26,共4页Soil and Fertilizer Sciences in China

基　　金：公益性科研院所基本科研业务专项(SJB1003)

摘　　要：利用Logistic方程对2个早熟棉品种(中36、中50)和2个中熟品种(中41、鲁28)的单株干物质积累、N、P2O5、K2O吸收动态进行模拟研究,结果表明,早熟品种与中熟品种吸收积累养分的高峰期均在开花至吐絮期。2个早熟棉品种单株干物质质量、N、K2O积累快速增长持续时间短于中熟品种,P2O5积累快速增长持续时间略长于中熟品种。早熟品种在吐絮至收获阶段,干物质积累及养分吸收占全生育期的比例高于中熟品种,成熟单株对P2O5、K2O的吸收比例高于中熟品种,在肥料配比上可适度加大磷钾肥比例。The field experiment was conducted to simulate the rule of dry matter accumulation,N,P2O5,K2O absorption of single cotton plant of 2 earliness cultivars of upland cotton（CRI 36,CRI 50）and 2 medium maturing cultivars（CRI 41,SCRC 28）by Logistic equation.The results showed that the faster moment of dry matter accumulation,P2O5,K2O absorption of single cotton plant of 2 earliness cultivars and 2 medium maturing cultivars of upland cotton were from full-bloom stage to opening bolls stage.The rapid growth period of dry matter accumulation,N,K2O absorption of single cotton plant of 2 earliness cultivars of upland cotton were shorter than those of 2 medium maturing cultivars,but the duration of rapid growth of P2O5absorption of single cotton plant of 2 earliness cultivars of upland cotton was much longer than those of 2 medium maturing cultivars.The proportion of dry matter accumulation and nutrients absorption from term of opening bolls to harvest of 2 earliness cultivars of upland cotton were higher than those of medium maturing cultivars,the proportion of P2O5,K2O absorption during whole growth season of 2 earliness cultivars of upland cotton were higher than those of 2 medium maturing cultivars relatively.The proportion of utilization of P and K fertilization could increase moderately in cultivation of earliness cultivars of upland cotton.

关 键 词：棉花 早熟和中熟品种 基因型 干物质积累 养分吸收 

分 类 号：S562[农业科学—作物学]