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Effect of Yellow River Water Drip Irrigation Coordinated with Soil Regulation Technology on Soil Physicochemical Properties and Maize Yield
LIZhengkui, XIAYuhong, ZHAOSha, HANTiankai, SUNLong, LIUJiaxin, CHENMin
Chin Agric Sci Bull ›› 2026, Vol. 42 ›› Issue (6) : 102-110.
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Abbreviation (ISO4): Chin Agric Sci Bull
Editor in chief: Yulong YIN
PDF(1274 KB)
Effect of Yellow River Water Drip Irrigation Coordinated with Soil Regulation Technology on Soil Physicochemical Properties and Maize Yield
This study investigates the effects of various soil conditioning techniques on soil physicochemical properties and maize yield under drip irrigation with Yellow River water under plastic film in the Hetao Irrigation District of Inner Mongolia, and screens optimal water-saving and soil-improving yield-increasing mode. Maize was used as the test crop, and single application of SAP, single application of PAM, mixed application of SAP + PAM ( S + P ), CK1 ( film mulching control ) and CK2 ( no film control ) were set up. Three irrigation quota gradients of 2376 m3/hm2, 2673 m3/hm2 and 2970 m3/hm2 were used to carry out field experiments by drip irrigation under the Yellow River water film. The soil bulk density, organic matter content, water content, total salt content, maize yield and irrigation water production efficiency were measured. The results indicate that, compared to the control group, both water-retaining agents and soil amendments reduced soil bulk density to varying degrees. The combined application of water-retaining agents and soil amendments resulted in the most significant reduction in soil bulk density, with an average decrease of 0.13 g/cm3 compared to pre-sowing levels. The soil organic matter content under plastic film in all treatments was generally higher than that of the control, with the combined treatment yielding the highest soil organic matter content at an average of 49.47 g/kg. Under the various treatment conditions, the combined application of water-retaining agents and soil amendments produced the highest maize yield and irrigation water productivity, reaching 15.6 t/hm2 and 17.58 kg/m3 respectively. For the same conditioning treatment, an irrigation quota of 2376 m3/hm2 was found to be most conducive to enhancing irrigation water productivity. Overall, the combined application of water-retaining agents and soil amendments demonstrated considerable advantages in improving soil physicochemical properties, increasing maize yield, and enhancing irrigation water productivity, offering valuable insights for similar agricultural production studies.
water-retaining agent / soil amendment / drip irrigation with Yellow River water / conditioning technology / physicochemical properties / maize yield / Hetao Irrigation District
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【目的】以紧凑型玉米品种先玉335为供试作物,研究地膜覆盖、施氮量、种植密度及其互作对春玉米氮素吸收转运及利用效率的影响,以期为黄土高原半干旱区春玉米高产高效栽培提供理论依据。【方法】2013—2014年春玉米生长季,设置覆盖方式(覆膜和不覆膜)、施氮量(2013年为0、170、200和230 kgN·hm<sup>-2</sup>,2014年为0、170、225和280 kgN·hm<sup>-2</sup>)和种植密度(5.0×10<sup>4</sup>、6.5×10<sup>4</sup>和8.0×10<sup>4</sup> 株/hm<sup>2</sup>)3个因子,分析不同处理的氮素累积与转运、产量及氮肥生产效率。【结果】地膜覆盖显著增加了玉米吐丝前氮素累积量,促进了吐丝后氮素累积和吐丝前累积氮素的再转移,从而显著提高了籽粒氮素累积量和籽粒产量。覆盖方式与氮肥或密度互作显著影响春玉米氮素吸收、累积和转移。地膜覆盖条件下更多的氮肥(200—230 kgN·hm<sup>-2</sup>)或更高的密度(6.5×10<sup>4</sup>—8.0×10<sup>4</sup>株/hm<sup>2</sup>)投入能有效促进吐丝前储存更多的氮素向籽粒转运,提高吐丝后期氮同化量及其对籽粒的贡献率,从而提高了籽粒氮素累积量;而不覆盖条件下当施氮量超过170 kg N·hm<sup>-</sup><sup>2</sup>或密度超过5.0×10<sup>4</sup>株/hm<sup>2</sup>时,吐丝后氮同化量及其对籽粒的贡献显著减少,从而导致吐丝前氮素储备的增加未能有效增加籽粒氮素累积。氮肥与密度互作显著影响氮素累积、吸收和转移。氮肥偏生产力(PFP<sub>N</sub>)和氮素收获指数(NHI)与吐丝前氮素累积量、氮素转移量、吐丝后氮素累积量及籽粒产量呈正相关,达到了显著水平。从春玉米氮素累积、转移及与产量和氮肥偏生产力关系看,全膜双垄沟播种植技术的合理施氮量为200—230 kgN·hm<sup>-2</sup>、密度为8.0×10<sup>4</sup>株/hm<sup>2</sup>,其产量可达13.7—14.6 t·hm<sup>-2</sup>,PFP<sub>N</sub>可达64.8—68.7 kg·kg<sup>-1</sup>。【结论】地膜覆盖与适宜的施氮量和种植密度相结合的综合管理实践,有利于促进灌浆期营养器官储存氮向籽粒转移和吐丝后氮同化的协同增加,从而实现高产和高氮肥生产力。
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为研究PAM和SAP联合施用对坡耕地土壤水分和马铃薯生长的影响效果,在内蒙古卓资县以不施材料为对照,设置喷施PAM+混施SAP与混施PAM+混施SAP各3组试验处理。结果表明:PAM和SAP联合施用后可以提高0~40 cm土层含水率,并且含水率随施用量增加而提高。H3与P3与对照相比最大增加26.97%和21.04%。施用PAM和SAP可提高苗期坡耕地0~80 cm土层贮水量,土壤贮水量与施用量呈正相关;但在马铃薯其他生育期,处理后的土壤贮水量低于对照。从播种到收获期,P2的马铃薯生物量达到最大,其水分利用效率比对照增加29.54%。因此,适量的施用PAM和SAP可改善土壤水分环境,增加马铃薯产量。
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