CAJ | 학술논문

[目的]研究不同施氮量条件下棉花植株对氮、磷、钾养分的吸收规律.[方法]采用纯氮单因子随机区组设计,设6个施氮处理.取样株测定各器官的氮、磷、钾养分吸收量.[结果]产量水平最高的N_2处理棉花植株氮、磷、钾积累的旺盛时期分别出现在播种后的54～110 d、57～120 d、44～89 d,比其它处理出现的早而且持续的时间长;棉花最高籽棉产量的施氮量为348.32 kg/hm~2,经济施氮量为320.46 kg/hm~2.[结论]各处理棉花植株氮、磷、钾养分积累量均呈现苗期积累小,蕾期迅速增大,花铃期达到高峰,吐絮期又有所减小的趋势.
[목적]연구불동시담량조건하면화식주대담、린、갑양분적흡수규률.[방법]채용순담단인자수궤구조설계,설6개시담처리.취양주측정각기관적담、린、갑양분흡수량.[결과]산량수평최고적N_2처리면화식주담、린、갑적루적왕성시기분별출현재파충후적54～110 d、57～120 d、44～89 d,비기타처리출현적조이차지속적시간장;면화최고자면산량적시담량위348.32 kg/hm~2,경제시담량위320.46 kg/hm~2.[결론]각처리면화식주담、린、갑양분적루량균정현묘기적루소,뢰기신속증대,화령기체도고봉,토서기우유소감소적추세.
[Objective and Method]The purpose of this research was to reveal the absorption law of nitrogen,phosphorus and potassium nutrient by cotton plant under different nitrogen fertilizer rate.[Result and Conclusion]The results demonstrated that when there was minimum accumulation of nitrogen,phosphorus and potssium of cotton plant with different treatments in the seedling stage of cotton,it was increased in bud stage,it reached a peak in flower bolling stage,but it was decreased in boll opening state.Among all the treatments,the productive period of accumulation of nitrogen,phosphorus and potassium treated with N_2 was the longest,which reached 54-100 d,57-120 d,44-89 d,respectively after sowing,which was earlier and longer than that of other treatments.The nitrogen fertilizer rate of the highest seed cotton yield was 348.32 kg/hm~2,the economic nitrogen fertilizer rate was 320.46 kg/hm~2.