摘要
为了分析玉米植株在不同灌溉工况下对植物吸收养分的影响规律,以贵州某田地为试验场所,设定4种灌溉工况(即滴灌T3、喷灌T2、沟灌T1、不灌溉CK),开展植物养分吸收规律量化试验。试验显示,在植物(玉米植株)的成熟期、抽丝期、拔节期,其干物质积累量、氮、磷、钾、钙、镁、铁、锰、铜、锌等养分的吸收量均趋于T3>T2>T1>CK的规律;在试验期间,发现植物(玉米植株)在T3工况下,其干物质积累量达到最大值,即14447.20 kg/hm^(2);在T3工况下,各养分积累量呈现显著的差异性,氮为207.73 kg/hm^(2)、磷为178.18 kg/hm^(2)、钾为204.65 kg/hm^(2)、钙为22.55 kg/hm^(2)、镁为7.62kg/hm^(2)、铁为8967.55g/hm^(2)、锰为1040.53g/hm^(2)、铜为406.65 g/hm^(2)、锌为1182.65 g/hm^(2)。结果表明,T3较T1、T2对植物(玉米植株)的养分吸收具有更好的促进作用,T3工况既可以促进植株的干物质积累量的增长,又可以提高植株的养分吸收量。
In order to analyze the influence of corn plants on the absorption of nutrients by plants under different irrigation conditions,this paper took a field in Guizhou as the experimental site,and set four irrigation conditions(i.e drip irrigation T3,sprinkler irrigation T2,furrow irrigation T1 and no irrigation CK)to carry out quantitative experiments on plant nutrient absorption.Experiments showed that in the maturity,silking and jointing stages of plants(maize plants),the accumulation of dry matter,the absorption of nitrogen,phosphorus,potassium,calcium,magnesium,iron,manganese,copper,zinc and other nutrients tended to trend.According to the law of T3>T2>T1>CK;during the experiment,it was found that the dry matter accumulation of plants(maize plants)reached the maximum value under the T3 condition,that is 14447.20 kg/hm^(2);under the T3 condition,each nutrient accumulation showed significant differences,nitrogen was 207.73 kg/hm^(2),phosphorus was 178.18 kg/hm^(2),potassium was 204.65 kg/hm^(2),calcium was 22.55 kg/hm^(2),magnesium was 7.62 kg/hm^(2),and iron was 8967.55 g/hm^(2),manganese is 1040.53 g/hm^(2),copper is 406.65 g/hm^(2),zinc is 1182.65 g/hm^(2).The results show that T3 has a better promotion effect on nutrient absorption of plants(maize plants)than T1 and T2,and T3 condition can not only promote the growth of dry matter accumulation of plants,but also improve the nutrient absorption of plants.
作者
史涵丹
SHI Han-dan(Guizhou Province Water Conservancy Science Research Institute,Guiyang 550000,China)
出处
《水利科技与经济》
2023年第3期121-126,共6页
Water Conservancy Science and Technology and Economy
关键词
干物质积累量
玉米植株
灌溉工况
养分吸收量
dry matter accumulation
corn plants
irrigation conditions
nutrient uptake
