| 谢军红,王进斌,李玲玲,周永杰,王林林,齐鹏.培肥模式对旱作全膜双垄沟播玉米生长及土壤呼吸的影响[J].干旱地区农业研究,2020,38(1):79~85 |
| 培肥模式对旱作全膜双垄沟播玉米生长及土壤呼吸的影响 |
| Effects of fertilization method on maize growth and soil respiration under plastic\|covered ridge and furrow planting in dry farmland |
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| DOI：10.7606/j.issn.1000-7601.2020.01.11 |
| 中文关键词: 培肥模式 旱作 全膜双垄沟播 玉米 生长特性 土壤呼吸 |
| 英文关键词:fertilization method dry farming plastic\|covered ridge and furrow planting maize growth characteristics soil respiration |
| 基金项目:国家科技支撑计划项目(2015BAD22B04-3);甘肃农业大学干旱生境作物学重点实验室开放基金课题（GSCS-2017-4）;NSFC项目（31460337,31660373和31761143004）;甘肃省教育厅项目（2017C-12）;甘肃省玉米产业体系项目(GARS-02-10) |
| 作者 | 单位 | | 谢军红 | 甘肃省干旱生境作物学重点实验室,甘肃 兰州 730070；甘肃农业大学农学院,甘肃 兰州 730070 | | 王进斌 | 甘肃省干旱生境作物学重点实验室,甘肃 兰州 730070；甘肃农业大学农学院,甘肃 兰州 730070 | | 李玲玲 | 甘肃省干旱生境作物学重点实验室,甘肃 兰州 730070；甘肃农业大学农学院,甘肃 兰州 730070 | | 周永杰 | 甘肃省干旱生境作物学重点实验室,甘肃 兰州 730070；甘肃农业大学农学院,甘肃 兰州 730070 | | 王林林 | 甘肃省干旱生境作物学重点实验室,甘肃 兰州 730070；甘肃农业大学农学院,甘肃 兰州 730070 | | 齐鹏 | 甘肃省干旱生境作物学重点实验室,甘肃 兰州 730070；甘肃农业大学资源与环境学院,甘肃 兰州 730070 |
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| 中文摘要: |
| 针对旱作全膜双垄沟播玉米培肥模式单一及碳排放理论薄弱的问题，依托大田试验研究了不施氮肥对照（CK）和等氮（纯N 200 kg·hm-2）条件下3个不同氮源(单施化肥,N;商品有机肥配施化肥, NM；单施有机肥, M)对玉米生长、产量、土壤呼吸速率及碳排放量的影响。结果表明：土壤呼吸速率随玉米生育时期的推进呈先增大后减小的趋势，开花期是土壤呼吸的峰值期，土壤呼吸速率达5.38 μmol·m-2·s-1；土壤碳排放总量与玉米干物质积累、生长速率、叶面积指数及净同化率均呈极显著正相关关系；玉米产量、碳排放量和碳排放效率在商品有机肥配施化肥和单施化肥处理间无显著差异，分别较对照增加了121.2%、41.9%、54.5%和151.4%、31.9%、92.9%。说明商品有机肥配施化肥在增加了碳排量的同时增加了玉米的产量，进而提高了碳排放效率。 |
| 英文摘要: |
| For maize production under plastic\|covered ridge and furrow planting, a serious issue was undiversified fertilization with deficient theoretical base for carbon emission reduction. Therefore, a filedstudy was conducted to determine the impacts of different fertilization practices on maize growth, grain yield, soil respiration and carbon emission. The experimental design consisted of a zero N control (CK) and three fertilizer practices with the same N amount, i.e. chemical fertilizer (N), chemical fertilizer in combination with organic fertilizer (NM), and organic fertilizer (M). The results showed that soil respiration rate increased at early growth stages while declined at late growth stages. The peak of soil respiration was revealed at flowering stage of maize, and the value is 5.38 μmol·m-2·s-1. The total carbon emission was positively correlated with dry matter, crop growth rate, leaf area index and net assimilation rate.There were no significant difference in yield, total carbon emission and carbon emission efficiency between chemical fertilizer and chemical fertilizer combination with organic fertilizer. Compared to control, the grain yield, total carbon emission, and carbon emission efficiency of chemical fertilizer increased by 151.4%,31.9%, and 92.9%.Similarly, that of chemical fertilizer in combination with organic fertilizer increased by 121.2%,41.9%, and 54.5%, respectively. This indicated that chemical fertilizer in combination with organic fertilizer increased carbon emission in the growing season, but it improved yield of maize, thus, enhanced carbon emission efficiency. |
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