| 引用本文: | 张瑜,冯绍元,苏童,等.不同耕作方式下新复垦区春玉米试验研究[J].灌溉排水学报,2018,37(8):64-70. |
| ZHANG Yu,FENG Shaoyuan,SU Tong,et al.不同耕作方式下新复垦区春玉米试验研究[J].灌溉排水学报,2018,37(8):64-70. |
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| 摘要: |
| 【目的】探索新复垦区春玉米种植适宜的耕作方式。【方法】通过田间试验，设置传统耕作（CK）、地膜覆盖（FM）、秸秆深埋（BS）、地膜覆盖+秸秆深埋（F+S）4种处理，研究了不同耕作方式对土壤水肥动态及春玉米生长和产量的影响。【结果】①F+S、BS、FM处理的玉米生育期内0～20 cm与20～40 cm土层平均含水率分别比CK增加了14.4%、0.2%、13.0%和9.1%、10.7%、1.1%。②玉米苗期至灌浆期，F+S处理的20～40 cm与40～60 cm土层土壤平均有机质量比CK、FM、BS处理分别高25.2%、12.5%、8.5%和12.4%、15.6%、5.9%；F+S、BS和FM处理玉米生育期内20～40 cm与40～60 cm土层土壤平均碱解氮量分别比CK高20.7%、22.4%、7.6%和20.4%、18.7%、6.3%。③从整个生长过程来看，不同处理的玉米株高、叶面积指数、茎粗均表现为F+S处理＞FM处理＞BS处理＞CK。F+S、BS和FM处理的玉米产量均显著高于CK（P<0.05），分别比CK提高了15.9%、10.5%、5.6%。【结论】地膜覆盖+秸秆深埋处理具有良好的蓄水增肥效果，为新复垦区春玉米的生长提供了较好的土壤环境，获得了较高产量，是新复垦区春玉米种植适宜的耕作方式。 |
| 关键词: 新复垦区； 秸秆深埋； 地膜覆盖； 土壤水肥； 春玉米 |
| DOI：10.13522/j.cnki.ggps.20180061 |
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| Impact of Different Tillage on Dynamics of Soil Moisture and Nutrient and the Growth of Spring Maize in Newly Reclaimed Land |
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ZHANG Yu, FENG Shaoyuan, SU Tong, ZHONG Zhaoyi, WANG Juan
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School of Hydraulic, Energy and Power Engineering, Yangzhou University, Yangzhou 225009, China
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| Abstract: |
| 【Objective】 The purpose of this paper is to study experimentally the change in soil moisture and nutrients under different tillage, as well as their consequent impacts on growth and yield of spring maize grown in reclaimed land. 【Method】 Field experiments were carried out under four tillage practices: traditional tillage (CK), plastic film mulching (FM), straw incorporation (BS), and straw incorporation with plastic film mulching (F+S). In each treatment, we measured changes in soil water, soil fertility and maize yield. 【Result】 ①Compared to CK, the average water contents in 0~20 cm and 20~40 cm under F+S, BS and FM increased by 14.4% and 0.2%, 13.0% and 9.1%, 10.7% and 1.1% respectively during the growth season of the maize. ②Compared to CK, FM and BS, F+S increased the average soil organic matter contents in 20~40 cm and 40~60 cm by 25.2% and 12.5%, 8.5% and 12.4%, 15.6% and 5.9%, respectively, from seedling stage to filling stage. Available nitrogen in 20~40 cm and 40~60 cm under F+S, BS and FM increased by 20.7% and 22.4%, 7.6% and 20.4%, 18.7% and 6.3% respectively, compared to CK during the growth season. ③The impacts of different treatments on plant height, leaf area index and stem diameter ranked in F+S>FM>BS>CK. The yields under F+S, BS and FM was significantly higher than that under CK, increasing by 15.9%, 10.5% and 5.6% respectively. 【Conclusion】Among all treatments, F+S appeared to be the best in improving soil water storage and nutrients, thereby offering a suitable cultivation method for sustaining spring maize production in newly reclaimed lands. |
| Key words: newly reclamation land; straw incorporation; plastic film mulching; soil water and fertility; spring maize |
