| 不同种植密度下玉米与豌豆间作对土壤水分、养分和产量的影响 |
| Alternative Title | Effects of intercropping peas on soil water storage, nutrient and yield under different sowing densities
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| 高慧 |
| Subtype | 硕士
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| Thesis Advisor | 张荣
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| 2016-05-15
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| Degree Grantor | 兰州大学
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| Place of Conferral | 兰州
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| Degree Name | 硕士
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| Keyword | 行内间作
土地当量比
地上生物量
籽粒产量
土壤贮水量
黄土高原
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| Abstract | 于2014年和2015年在黄土高原半干旱区全膜覆盖双垄沟播种技术下，保持行距不变，控制玉米播种密度的株距设定为40 cm、50 cm与60 cm；在同一玉米行内相邻玉米之间分别不插播(作为对照)、插播1株和2株豌豆，形成9种处理组合，同时进行豌豆单播，株距分别为13.33、16.67、20、25及30 cm。研究玉米播种密度与行内间作对土地利用、作物籽实产量、土壤贮水量和肥力影响。结果表明，2014年，玉米株距为40 cm和50 cm时，在玉米株间插播2株豌豆与不插播相比显著提高（p < 0.05）作物群体籽粒总产量，而在株距60 cm情况下，插播豌豆对作物群体总产量无显著影响（p > 0.05）。2015年，玉米株距40 cm和50 cm时，株间插播2株豌豆的行内间作与对应株距的单作玉米相比较，对群体籽粒总产量无显著影响（p > 0.05），但是在玉米株距60 cm的情况下，株间插播2株豌豆，与不间作相比较使作物群体籽粒总产量显著增加（p < 0.05）。导致两个实验年份之间玉米行内间作豌豆的产量效应差异的主要原因是生长季降水量在2014年较2015年充沛。综合比较两年内各处理的籽粒总产量，玉米株距40 cm、株间插播2株豌豆间作形式的籽粒总产量最高。此外，我们研究发现在玉米单作和行内间作中，籽粒总产量均随玉米株距的增大而减小。 |
| Other Abstract | A field experiment was conducted in 2014 and 2015 in the Loess Plateau semi-arid ecosystems experimental station of Lanzhou University, by using double-ridges mulching with film with ridge width of 40 cm and 70 cm, respectively, in which corn plants were sown along the rows with spacing 40, 50 and 60 cm, respectively, and one or two individual plants of peas were inserted between corn plants equidistantly, and also design peas monoculture with plant spacing 13.33, 16.67, 20, 25 and 30 cm respectively, so the experiment had fourteen treatments. Comparing synthetically moboculture and whith-row-intercropping in different corn plant spacing and the within-row-intercropping in the same corn spacing in which inserting one or two peas on the total aboveground biomass, the total grain yield, aboveground biomass and grain yield of corn and peas as well as aboveground biomass and grain yield of per plant of corn and pea; discussed the different treatments on the 0~20 cm, 20~60 cm and 60~100 cm soil water storage and 0~20 cm and 20~40 cm soil microbial carbon and nitrogen, nitrogen nitrate, total nitrogen and organic matter.
The results showed that, in 2014, when maize plant spacing within a row was set as either 40 cm or 50 cm, to intercrop 2 pea plants between every 2 maize plants significantly increased the total grain yield of the community compared with not to intercrop pea plants. In 2015, in the case of either 40 cm or 50 cm spacing of the maize plants, intercropping 2 pea plants did not affect the total grain yield of the community, relative to not intercropping pea crops; however, in the case of 60 cm spacing of maize plants, intercropping 2 pea plants increased the total grain yield of the community. The more abundant rainfall in 2014 than in 2015 induced the varied effects of intercropping pea plants on increasing the total grain yield of the community between the two cropping seasons. Combining the results of the two experimental years, we found that the cropping pattern to set the maize plant spacing as 40 cm and intercrop 2 pea plants between every 2 maize plants could get to the highest total grain yield of the community among different treatments. In addition, we found that in all treatments including maize monoculture or maize and pea intercropping treatments, the total grain yields of the community all decreased with increasing maize plant spacing. |
| URL | 查看原文
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| Language | 中文
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| Document Type | 学位论文
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| Identifier | https://ir.lzu.edu.cn/handle/262010/221662
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| Collection | 生命科学学院
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Recommended Citation
GB/T 7714 |
高慧. 不同种植密度下玉米与豌豆间作对土壤水分、养分和产量的影响[D]. 兰州. 兰州大学,2016.
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