摘要
采用水培试验，研究了营养液中不同铵、硝态氮配比对几种作物生长的效应。结果表明，铵、硝态氮配比显著地影响作物生长。小麦、荞麦和小白菜的生长量随硝态氮比例增大而增加。玉米、糜子和番茄的生长量以二者配合更好；配合液中的铵、硝态氮比例增大，玉米和番茄的生长量增加。适于作物苗期生长的最佳铵、硝态氮配比是；小麦、荞麦和小白菜为０：１００和２５：７５，玉米为７５：２５和５０：５０，番茄为７５：２５，糜子从７５：２５到２５：７５。
Water culture experiments were conducted to study the effect of NH4+- N/NO3- -N ratioes in the nutrient solution on the growth of some crops.The results showed that NH4+ -N/NO3- -N ratioes(100:0,775:25,50:50,25:75,0:100)had obvious effects upon plant growth.The biomasses of wheat,buckwheat and pakchoi increased with nitrate-N increase,but decreased with increase of ammonium-N;those of maize,proso and tomato were higher with application of both NH4+ and NO3- than with application of either form;and those of maize and tomato increased with ammonium fraction increase when borh NH and NO were applied to a solution.The most suitable ratioes of NH to NO nitrogen for the growth of young plants ranged from 0:100 to 25:75 for wheat,buckwheat and pakchoi,from 75:25 to 50:50 for maize, from75:25 to 25:75 for proso,and 75:25 for tomato,respectively.
出处
《宁夏农学院学报》
1996年第4期16-20,共5页
Journal of Ningxia Agricultural College
关键词
作物
铵
硝态氮
配比
营养液培养
crop NH_4￣+ -NO_3￣- ratio culture experiment in nutrient solution
