不同水分条件下氮肥形态配比对苋菜养分与产量的影响

Effects of Nitrogen Forms on Nutrient and Yield of Amaranth with Different Irrigation

研究了不同水分与氮肥形态配比对苋菜养分和产量的的影响,结果表明:同一水分条件下,苋菜的N,P,Fe含量随NH4+-N比例的增大而增加;K,Ca含量随NH4+-N比例的增大而减小。苋菜的产量随NO3--N比例的增大而增加。同一施肥条件下,苋菜N,P,Fe含量随水分的增加而增加;苋菜的K,Ca含量、产量以中水处理最高。

Pot experiment was conducted to study the effects of different NO2^-N/NH4^＋ -N ratios on nutrient and yield of amaranth in different condition of water. The results showed that the N, P, Fe contents of amaranth increased and the K and Ca decreased with the increasing of NH4^＋ -N/NO3^-N ratio in the same irrigation amount. The yield of amaranth increased with the increasing of NO3^-N/NH4^＋ --N ratio in the same irrigation amount. The N, P, Fe contents of amaranth increased with the increasing of irrigation amount; the K, Ca contents and yield of amaranth were highest in middle irrigation amount.