摘要
为提高烤烟种植养分利用率,降低化学肥料使用量,以南江三号为试验材料进行田间试验,研究聚天冬氨酸对烤烟生长、产量及矿质养分吸收的影响。结果表明,减量施肥20%水平下,添加聚天冬氨酸促进了烤烟生长及地上部干物质累积,烤烟根系活力、ATPase活性、光合速率等显著提高,且高水平聚天冬氨酸更有利于烤烟生长。与常规施肥相比,减量施肥+聚天冬氨酸处理烟叶氮磷钾累积量涨幅分别为2.79%～8.66%、2.31%～9.2%、1.15%～4.45%;土壤速效氮、速效磷、速效钾分别增加了6.79%～32.29%,5.71%～21.31%和1.36%～31.08%;烟叶产量变幅为–6.28%～2.46%,两处理间差异不显著。可见,施用聚天冬氨酸可以提高烤烟对养分的吸收,减少肥料施用量;以添加5%聚天冬氨酸效果较好。
To improve the utilization of nutrients and reduce the application of chemical fertilizers in flue-cured tobacco farming,a field experiment was conducted to study the effects of polyaspartic acid on the tobacco growth,yield and mineral elements absorption with‘Nanjiang No.3’.The results indicated that with 20%reduction of fertilizer application,polyaspartic acid could promote flue-cured tobacco growth and dry matter accumulation,and increase the root system activity,ATPase physiological activity and photosynthetic characteristics.Furthermore,the high-level polyaspartic acid was more conducive to the tobacco final growth than any other levels.Compared with the contrast,the treatment which combined the reduction of fertilizer with the application of polyaspartic acid revealed that the accumulation of N,P and K in tobacco leaves increased by 2.79%-8.66%,2.3%-9.2%and 1.15%-4.45%,respectively;the siol available N,P and K contents increased by 6.79%-32.29%,5.71%-21.31%and 1.36%-31.08%,respectively;the output of tobacco leaves varied from-6.28%to 2.46%with no significant difference was found between the two treatments.It was concluded from this study that the addition of polyaspartic acid could increase the flue-cured tobacco absorption of nutrients and reduce the use of chemical fertilizer,and that the application of 5%polyaspartic acid showed the best effect.
作者
曹本福
桂阳
祖庆学
李碧宽
母少东
陆引罡
CAO Benfu;GUI Yang;ZU Qingxue;LI Bikuan;MU Shaodong;LU Yingang(Guizhou University,Huaxi Guizhou 550025,China;Kaiyang Tobacco Company of Guizhou Province,Kaiyang,Guizhou 550300,China)
出处
《中国烟草科学》
CSCD
北大核心
2018年第5期57-63,共7页
Chinese Tobacco Science
基金
贵阳市烟草公司科技项目"开阳县特色烟叶生产技术集成与应用"[贵烟计(2015)6号]
国家自然科学基金项目"植烟土壤土传病害区微生物群落结构变化及修复"(31760133)
关键词
聚天冬氨酸
烤烟
肥料利用率
光合特征
polyaspartic acid
flue-cured tobacco
fertilizer utilization rate
photosynthetic characteristics
