摘要： 采用盆栽的方法,研究了不同形态氮素及不同配比对基质培番茄的生理代谢、生长发育、产量形成以及品质的影响。结果表明:氨态氮或酰胺态氮比例达到50:50时,植株生长正常,不影响根系活力和光合作用,叶片含水量正常。在秋冬茬可明显提高产量;在春夏茬可增加早期产量,总产量和单果重正常,并可延长果实的保鲜期。当氨态氮或酰胺态氮占营养液总氮量的75%时,植株生长受抑制。随着氨态氮或酰胺态氮比例的提高,叶片中全氮、全磷含量增加,果实中硝酸盐含量下降,还原糖、Vc含量上升,总酸含量不受影响。
关键词:
番茄,
基质培,
不同形态氮素
Abstract: This s tudy evaluated the influence of NO3-N to NH4-N or CO(NH2)2-N ratios on physiological activity, growth and development, composi tion of yield and fruit quality of tomato. The results are as follows: plants supplied wi th nitrogen at NH4-N/ NH4-N+ NO3-N of 50% or as CO(NH2)2-N had normal potosynthet ic rate, plant growth, root vigor and leaf water content are normal.The plant vegetative growth and the total yield were promoted in the fal-l winter exper-iment, in spring-summer experiment, the early yield and dry weight increased, the total yield and the average weight of individual fruit were not af fected, and stora ge time was prolonged. The plant suplied with nit rogen at over NH4-N/ NH4-N+NO3-N of 75% or as CO(NH2)2-N intrient solution had apoor growth. With the increase of NH4-N or CO(NH2)2-N ratio in nutrient solution, the concentration of total N, P in the leaves increased. Suger and Vcin the fruit increased, and the total acid content of fruit was not affected.
Key words:
Tomato,
Media culture,
Form of nitrogen
中图分类号:
杨月英, 张福墁, 乔晓军. 不同形态氮素对基质培番茄生育、产量及品质的影响[J]. 华北农学报, 2003, 18(1): 86-89. doi: 10.3321/j.issn:1000-7091.2003.01.024.
YANG Yue ying, ZHANG Fu man, QIAO Xiao jun. Effect of Nitrogen Forms on Growth Development, Yield and Fruit Quality of Tomato in Media Culture[J]. ACTA AGRICULTURAE BOREALI-SINICA, 2003, 18(1): 86-89. doi: 10.3321/j.issn:1000-7091.2003.01.024.