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研究了起垄栽培对夏玉米生态环境及生长发育的影响 结果表明 ,土壤垄作在一定程度上改进了耕层的土壤结构 ,提高了土壤温度 ,协调了土壤三相比 垄面 5 5cm以内土壤容重减少 1 2 5 % ,孔隙度增大 1 7 8% ,田间小气候改善 ,风速变大 ,基部CO2 的含量升高了 6 6 % 促进了根系的发育 ,干物质积累增多 ,叶面积指数增大 ,后期表现出较好的保绿性 ,茎鞘和叶片干重提高 ,输出减少 ,子粒灌浆速率增大 ,千粒重增加 2 6 7g ,单株地上部总干重增加 32g 同时 ,植株倒伏率和空秆率明显减少 ,株高、穗位高降低 ,收获指数提高 ,穗部性状较好 ,产量比平作增产 1 1 7% .
The effects of ridge cultivation on the ecological environment and growth and development of summer maize were studied. The results showed that soil ridge cultivation improved the soil structure and raised soil temperature to a certain extent, and coordinated soil bulk density within 5 5 cm Decreased by 125% and porosity increased by 17.8%. The microclimate in the field improved and the wind speed increased. The content of base CO2 increased by 6 6%, which promoted the development of root system, increased dry matter accumulation and increased leaf area index, The late stage showed better green-keeping ability, the dry weight of stems and sheaths increased, the output decreased, the grain filling rate increased, the grain weight increased by 2667g, the total shoot dry weight increased by 32g. Meanwhile, the plant lodging rate and empty stalk The rate of plant height, ear height decreased, the harvest index increased, the ear traits were better, and the yield was increased by 11.7%