摘要
为明确烤烟烟苗阴阳离子平衡对不同铵态氮和硝态氮比例的生理响应,采用水培试验,以云烟87为试验材料,研究了不同铵硝配比处理对烟苗生长和阴阳离子平衡的影响。结果表明,硝态氮比例增加有利于烟苗根、茎、叶生长。苹果酸和草酸含量在全硝处理下显著大于其他处理,而铵硝比25:75处理柠檬酸含量与全硝处理未达到显著差异;阳离子K^(+)、Ca^(2+)、Mg^(2+)含量随硝态氮比例增加呈增加趋势,而铵硝比50:50处理无机阴离子NO_(3)^(–)和SO_(4)^(2–)含量最大,分别为0.06和1.03mmol/g,Cl^(–)含量在铵硝比75:25处理下显著大于其他处理,H_(2)PO_(4)^(–)含量随硝态氮比例增加而增加,随后保持不变,最大值为0.20mmol/g。随硝态氮比例的增加,阴阳离子平衡先呈碱化趋势后呈酸化趋势,全硝处理下阴阳离子平衡结果最差,为3.43mmol/g,但并未造成离子失衡。综合考虑,氮素形态以铵硝比为0:100对烟苗生长和离子平衡等各项指标的影响最佳。
In order to clarify the physiological response of the anion-cation balance of flue-cured tobacco seedlings to different ratios of ammonium nitrogen and nitrate nitrogen,a hydroponic experiment was conducted.Using Yunyan 87 as material,the effects of different ammonium and nitrate ratio treatments on the growth and anion-cation balance of tobacco seedlings were studied.The results showed that the increase in the ratio of nitrate nitrogen was beneficial to the growth of roots,stems and leaves of tobacco seedling.The contents of malic acid and oxalic acid under the total nitrate treatment were significantly higher than that of other treatments,while the content of citric acid under the ratio of ammonium to nitrate 25:75 was not significantly different from that of the total nitrate treatment;the contents of cations(K^(+),Ca^(2+),Mg^(2+))increased with the increase of the ratio of nitrate nitrogen,while the charges of NO_(3)^(–)and SO_(4)^(2–)under 50:50 treatment reached the maximum,which were 0.06 and 1.03mmol/g,respectively,and Cl^(–)content under 75:25 treatment was significantly higher than those of other treatments,H_(2)PO_(4)^(–)content increased with the increase of nitrate nitrogen and then remained unchanged,with a maximum value of 0.20mmol/g.With the increase of nitrate nitrogen ratio,the anion-cation balance showed a trend of alkalization first and then acidification.Anion-cation balance of total nitrate treatment was the worst(3.43mmol/g),but there was no ion imbalance.Considering the effects of nitrogen forms on tobacco seedling growth and ion balance,the 0:100 ratio of ammonium to nitrate was the best.
作者
祖庆学
聂忠扬
林松
饶陈
张翼飞
张涵
Zu Qingxue;Nie Zhongyang;Lin Song;Rao Chen;Zhang Yifei;Zhang Han(Kaiyang Branch of Guizhou Tobacco Company,Kaiyang 550300,Guizhou,China;Agricultural College,Guizhou University,Guiyang 550025,Guizhou,China)
出处
《作物杂志》
北大核心
2023年第3期154-158,共5页
Crops
基金
贵州省烟草公司贵阳市公司科技项目“开阳烟叶田园综合体生产配套关键技术研究与应用”(筑烟科技{2019}2号)。
关键词
铵硝配比
烟苗
生长
阴阳离子平衡
Ammonium-nitrate ratio
Tobacco seedling
Growth
Balance of anion-cation
