AMMONIUM-N AND NITRATE-N EFFECTS ON THE GROWTH AND MINERAL COMPOSITIONS OF TRITICALE, WHEAT, AND RYE
AMMONIUM-N AND NITRATE-N EFFECTS ON THE GROWTH AND MINERAL COMPOSITIONS OF TRITICALE, WHEAT, AND RYE
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DOI：
10.2134/agronj1981.00021962007300010011x
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发表时间：
1981-01-01
期刊：
影响因子：
2.1
通讯作者：
MUGWIRA, LM
中科院分区：
文献类型：
--
作者：
GASHAW, L;MUGWIRA, LM
在生长箱中测定了小黑麦6 TA 131、“阿瑟”小麦和“阿布鲁齐"黑麦在不同NH_4 ~+-N/NO_3 ~--N比例营养液中的生长和矿质成分。NH 4 +-N/NO3--N比例为0/100、25/75、50/50、75/25和100/0。在30天的植物生长期内，每10天对溶液进行取样。小黑麦和黑麦对NO_3 ~--N的吸收大于对NH_4 ~+-N的吸收，小麦对NO_3 ~--N的吸收有时大于对NH_4 ~+-N的吸收（50/50）。所有物种产生较高的干物质与25/75，50/50，和75-25 NH 4 +-N/NO3--N比的组合比与任何单独的N源。随着NH_4 ~+-N比例的增加，N、P和Fe的吸收量增加，而NO_3 ~--N则增加Mg、Ca、Mn和NO_3 ~--N的吸收量。小黑麦对NO3-的吸收效率遗传自黑麦。
The growth and mineral composition of triticale 6TA 131, ''Arthur wheat, and ''Abruzzi'' rye grown in nutrient solutions containing different NH4+-N/NO3--N ratios in a growth chamber were determined. The NH4+-N/NO3--N ratios were 0/100, 25/75, 50/50, 75/25, and 100/0. Solutions were sampled every 10 days during a 30-day plant growth period. Triticale and rye more preferentially absorbed NO3--N over NH4+-N than wheat which sometimes (50/50) absorbed more NO3 than NH4. All species produced higher dry matter with the combinations of 25/75, 50/50, and 75-25 NH4+-N/NO3--N ratios than with either N source alone. There were increases in the uptake of N, P, and Fe when NH4+-N ratio was increased in the mixture whereas NO3--N increased the uptake of Mg, Ca, Mn, and NO3--N. The triticale inherited its absorption efficiency of NO3- from rye.