Bio:
Email: wangqy_ahau@163.com
汪秋云(1996—),女,硕士,农艺师,长期从事肥料效果验证及增效剂技术研究;wangqy_ahau@163.com
为考察添加海藻提取物海藻多糖、海藻精的脲铵氮肥作为追肥对农作物生长发育和土壤理化性状的影响,以生菜为试验对象,开展了盆栽试验。试验共设置3个处理,分别在基施复合肥(N-P2O 5-K2O=15-15-15)的基础上追施脲铵氮肥(T1)、含海藻多糖脲铵氮肥(T2)、含海藻精脲铵氮肥(T3),考察了不同追肥处理对生菜的生长指标、叶绿素相对含量(SPAD值)、氮含量及土壤理化性状等指标的影响。结果表明:T2、T3处理的生菜鲜质量、株高、叶长、叶宽及叶面积均优于T1处理的;T2、T3处理的生菜SPAD值和氮含量较T1处理的分别提高了5.43%和7.37%、4.62%和5.95%;与T1处理相比,T2、T3处理提高了土壤pH,提升了土壤中有机质、全氮、碱解氮、有效磷和速效钾的含量。
To investigate the effects of urea-ammonium nitrogen fertilizer supplemented with seaweed polysaccharides and seaweed extract, used as topdressing, on crop growth and development as well as soil physical and chemical properties, a pot experiment is conducted using lettuce as the test subject. Three treatments are established in the experiment, in which urea-ammonium nitrogen fertilizer (T1), urea-ammonium nitrogen fertilizer containing seaweed polysaccharides (T2), and urea-ammonium nitrogen fertilizer containing seaweed extract (T3) are applied as topdressing on the basis of a basal application of compound fertilizer (N-P2O5-K2O=15-15-15). The effects of different topdressing treatments on the growth indicators, chlorophyll relative content (SPAD value), nitrogen content of lettuce, and soil physical and chemical properties are investigated. The results show that the fresh weight, plant height, leaf length, leaf width, and leaf area of lettuce in the T2 and T3 treatments are superior to those in the T1 treatment. Compared with the T1 treatment, the SPAD values and nitrogen contents of lettuce in the T2 and T3 treatments are increased by 5.43% and 7.37%, and by 4.62% and 5.95%, respectively. Compared with the T1 treatment, the T2 and T3 treatments show increases in soil pH, contents of organic matter, total nitrogen, alkaline-hydrolyzable nitrogen, available phosphorus, and available potassium.
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张靖, 张超一, 宋海妹. 海藻提取物作为拌种增效剂对小麦种子生长发育的影响[J]. 肥料与健康, 2023, 50(2): 44-47. doi:10.3969/j.issn.2096-7047.2023.02.008