摘要
为提高肥料利用率,实现减肥目标,根据玉米生长发育的营养需求,在玉米播后第28天和第53天(小喇叭口期与大喇叭口期)2次喷施脲甲醛叶面缓释氮肥稀释液,并通过盆栽试验确定了喷施脲甲醛叶面缓释氮肥的适宜浓度。试验设6个处理,考察了玉米的农艺性状和叶面肥喷施前后土壤的理化性状。结果表明:喷施脲甲醛叶面缓释氮肥后,可提高生育中后期叶片的叶绿素相对含量(SPAD值);对株高有促进作用,特别在生育后期作用更加明显;在生育中期可显著增大茎粗并维持较长的时间;可促进对土壤中养分的吸收利用;可降低根冠比、根体积与根系表面积,促进地上部生长。脲甲醛叶面缓释氮肥稀释50倍喷施较适宜,所得玉米的干质量显著优于其他处理的,且根体积、根系表面积较大。
In order to improve fertilizer utilization efficiency and achieve the goal of weight loss,according to the nutritional needs of maize growth and development,urea formaldehyde foliar slow release nitrogen fertilizer diluent is sprayed twice on the 28th and 53rd day after maize sowing(small flare period and big flare period),and the appropriate concentration of urea formaldehyde foliar slow release nitrogen fertilizer is determined through pot experiment.Six treatments are set up to investigate the agronomic properties of maize and the physical and chemical properties of soil before and after foliar fertilizer spraying.The results show that spraying urea formaldehyde foliar slow release nitrogen fertilizer could increase the relative chlorophyll content(SPAD value)of leaves in the middle and late growth stage.The plant height,especially in the later stage of growth,is promoted.In the middle growth stage,the stem diameter can be significantly increased and maintained for a long time.The absorption and utilization of nutrients in soil can also be promoted.It can reduce root shoot ratio,root volume and root surface area,and promote shoot growth.Urea formaldehyde foliar slow release nitrogen fertilizer diluted 50 times is more suitable for spraying,and the dry weight of maize are significantly better than those of other treatments,as well as the root volume and root surface area are also larger.
作者
王准
王亮亮
程红颂
郭景丽
WANG Zhun;WANG Liangliang;CHENG Hongsong;GUO Jingli(Henan Xinlianxin Chemicals Group Co.,Ltd.,Xinxiang,Henan 453731,China)
出处
《肥料与健康》
CAS
2022年第4期26-31,共6页
Fertilizer & Health
关键词
脲甲醛
叶面肥料
缓释氮肥
玉米
urea formaldehyde
foliar fertilizer
slow release nitrogen fertilizer
maize
