腐植酸专用肥分层异位同播技术对玉米生长的影响

Effects of applying HA compound fertilizer in different soil layers on maize growth

为简化农艺措施,降低生产成本,本文通过田间试验法,以腐殖酸玉米专用肥和无机复混肥的实用技术作对比,研究了玉米腐殖酸专用肥分层异位同播施肥技术对玉米全生育期内干物质动态积累、养分动态吸收、产量及经济效应的影响。结果表明:全生育期内,随着生育期的延长,各处理玉米干物质积累和养分吸收均逐渐增加,直到成熟。在成熟期,与无机复混肥常规施肥技术相比,腐植酸专用肥分层异位同播技术的玉米根条数增加8.1条/株,叶面积指数增加了20.1%,地上部干物质积累增加2 354.25 kg/hm2;植株体内积累氮、磷、钾量分别提高50.43、18.87、24.70 kg/hm2;获得12 147.35 kg/hm2的籽粒产量,纯收入增加4 934.6元/hm2。

A field experiment was conducted to study the effects of different fertilization technology on maize growth.The results indicated that the dry matter accumulation and nutrient uptake were both increased with maize growth in all treatments.Compared with conventional application of chemical fertilizer,applying HA compound fertilizer in different soil layers could increase the leaf area index and root number of maize by 20.1% and 8.1 per plant,respectively,enhance the dry matter accumulation by 2 354.25 kg/hm2,and increase the contents of nitrogen,phosphorus and potassium in plant by 50.43,18.87 and 24.70 kg/hm2,respectively.Meantime,the yield of maize in this treatment was reached to 12 147.35 kg/hm2,and peasant income was increased by 4 934.6 yuan/hm2.