Bio:
Email: 18866287314@163.com
张超一(1989—),男,硕士,高级工程师,主要从事海洋生物刺激素研发及应用工作;18866287314@163.com
为考察海藻提取物配施复合肥对玉米的生长、养分吸收及产量的影响,以丰大611品种为试验材料,开展了盆栽和大田试验。盆栽和大田试验均设置施用常规复合肥(CK)及等量常规复合肥配施质量分数分别为0.1%、0.3%、0.5%、0.7%、0.9%海藻提取物(T1~T5)等6个处理,测定不同处理的玉米生长特性、植株养分含量、产量等指标。结果表明:与CK处理相比,海藻提取物配施复合肥的处理能有效促进玉米根系发育,T4处理的玉米根尖数、根总长和根表面积较CK处理的分别显著提高136.59%、81.67%和93.57%;T3处理的玉米氮积累量最高,较CK处理的显著增加53.02%;T4处理的玉米中磷、钾积累量表现最好,较CK处理的分别显著增加67.78%、55.53%;与CK处理相比,T5处理的玉米穗位叶叶面积显著提高22.05%,T3处理的玉米千粒质量显著提高2.79%,T1~T5处理的玉米产量整体提高2.8%~13.7%。在常规复合肥中添加质量分数0.3%~0.7%海藻提取物,可有效促进玉米根系生长发育及对养分的吸收利用,实现玉米增产。
To investigate the effects of seaweed extract combined with compound fertilizer on the growth, nutrient uptake, and yield of maize, pot and field experiments are conducted using Fengda 611. Both experiments include six treatments: application of conventional compound fertilizer alone (CK), and application of the same amount of conventional compound fertilizer combined with seaweed extract at mass fractions of 0.1%, 0.3%, 0.5%, 0.7%, and 0.9% (T1 to T5). Maize growth characteristics, plant nutrient content, and yield under different treatments are measured. The results show that, compared with the CK treatment, the combined application of seaweed extract and compound fertilizer effectively promotes maize root development. Specifically, the T4 treatment leads to significant increases of 136.59%, 81.67%, and 93.57% in root tip number, total root length, and root surface area compared with the CK treatment. The T3 treatment results in the highest nitrogen accumulation, which is significantly increased by 53.02% compared with the CK treatment. The T4 treatment also shows higher phosphorus and potassium accumulation, with significant increases of 67.78% and 55.53%, respectively. Compared with the CK treatment, the T5 treatment significantly increases the leaf area of the ear leaf by 22.05%, and the T3 treatment significantly increases the 1 000-grain weight by 2.79%. The maize yield across T1 to T5 treatments increases overall by 2.8% to 13.7% compared with the CK treatment. In conclusion, adding seaweed extract at a mass fraction of 0.3% to 0.7% to conventional compound fertilizer can effectively promote maize root growth and development, enhance nutrient absorption and utilization, and thereby increase maize yield.
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