新疆高产棉田氮、磷、钾吸收动态及模式初步研究  

A Preliminary Study on Dynamics and Models of N, P, K Absorption in High Yield Cotton in Xinjiang

作　　者：王克如[1] 李少昆[1,2] 曹连莆[1] 宋光杰[3] 陈刚[3] 曹栓柱[3] 

机构地区：[1]兵团绿洲生态农业重点实验室/石河子大学新疆作物高产研究中心 [2]中国农业科学院作物育种栽培研究所/农业部作物遗传育种重点开放实验室,北京100081 [3]新疆生产建设兵团农三师

出　　处：《中国农业科学》2003年第7期775-780,共6页Scientia Agricultura Sinica

基　　金：国家"十五"科技攻关资助项目 (2 0 0 1BA5 0 7A);国家自然科学基金资助项目 (3976 0 0 40 )

摘　　要：对 30 0 0kg·ha-1皮棉高产测定的结果表明 ,棉花叶片、茎枝、蕾铃中的氮、磷、钾含量随生育进程呈明显下降趋势 ,且下降幅度大于 2 0 0 0kg·ha-1对照产量棉田。整个生长期 ,叶片、蕾铃中氮的百分含量明显高于对照产量棉田 ,尤以果枝叶最明显 ;蕾铃中的磷和茎枝的钾百分含量高于对照棉田 ;棉株群体中氮、磷、钾的积累可用Lo gistic曲线方程表达 ,拟合良好。养分吸收最快的时间 :氮约在出苗后 90d ,磷在 92d ,钾则偏早 ,约在出苗后 85d。在 30 0 0kg·ha-1皮棉高产条件下 ,棉株从土壤中吸收的氮、磷、钾分别为 385 .8、2 44 .7和 34 0 .3kg。每生产 10 0kg皮棉和相应的茎叶需吸收氮 12 .5kg、磷 8.0kg和钾 11.1kg。The fields experiments were carried out for a yield of lint 3 000 kg·ha -1 under field in Xinjiang the results showed that the percentage content of N, P 2O 5, K 2O in cotton leafs, stems, squares and bolls decreased obviously with the days after emergence, and the falling extent were greater than CK. The percentage content of N in cotton leaf and that of P 2O 5 in squares and bolls and that of K 2O in stem were higher in high-yield cotton than in CK during the whole growth period. The accumulations of N, P 2O 5, K 2O in cotton plant could be described by Logistic curve equation. The fastest time of nutrient uptake was at about 90 days for N, 92 days for P 2O 5, 85 days for K 2O after emergence, respectively. Total accumulation was N 385.8 kg·ha -1, P 2O 5 244.7 kg·ha -1, K 2O 340.3 kg·ha -1 respectively. Aproximately 12.5 kg N, 8.0 kg P 2O 5 and 11.1 kg K 2O were needed for producing per 100 kg lint under the super high yield condition of 3 000 kg·ha -1 in Xinjiang.

关 键 词：新疆 棉田 氮 磷 钾 吸收动态 吸收模式 产量 生长发育 

分 类 号：S562.062[农业科学—作物学]