| 不同密度对超甜玉米产量、商品性及可溶性固形物含量的影响 |
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| 引用本文： | 徐丽,卢柏山,史亚兴,席胜利,赵久然.不同密度对超甜玉米产量、商品性及可溶性固形物含量的影响[J].玉米科学,2018,26(3):102-107. |
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| 作者姓名： | 徐丽 卢柏山 史亚兴 席胜利 赵久然 |
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| 作者单位： | 北京市农林科学院玉米研究中心 |
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| 基金项目： | 北京市粮经作物产业创新团队（BAIC09-2017）、北京市科技计划课题（Z171100001517013）、北京市农林科学院青年科研基金（QNJJ2017） |
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| 摘 要： | 以超甜玉米品种京科甜183、京科甜533为试验材料,设3.0万、3.75万、4.5万、5.25万、6.0万、6.75万株/hm2共6个密度处理,研究不同密度对超甜玉米生长、产量、商品特性及可溶性固形物含量的影响。结果表明,随种植密度增加,玉米产量逐渐增高,穗长、穗粗、一等穗率、特等穗率逐渐下降,乳熟期子粒可溶性固形物含量逐渐降低。京科甜183和京科甜533产量显著增加点分别在密度增加至5.25万和4.5万株/hm2时,随密度继续增加产量增幅不明显。密度增加至5.25万株/hm2时,京科甜183一等以上穗率开始显著降低;密度增加至6.0万株/hm2时,京科甜183穗长、京科甜533穗长和一等以上穗率以及两个品种子粒可溶性固形物含量开始显著降低。京科甜183密度以5.25万株/hm2为宜;京科甜533的密度应适当降低,以4.5万~5.25万株/hm2为宜。
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| 关 键 词： | 超甜玉米 种植密度 商品性 可溶性固形物 |
| 收稿时间： | 2017/9/1 0:00:00 |
Effects of Different Planting Densities on Yield, Commodity Characteristics and Soluble Solids of Sweet Corn |
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| XU Li,LU Bai-shan,SHI Ya-xing,XI Sheng-li and ZHAO Jiu-ran.Effects of Different Planting Densities on Yield, Commodity Characteristics and Soluble Solids of Sweet Corn[J].Journal of Maize Sciences,2018,26(3):102-107. |
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| Authors: | XU Li LU Bai-shan SHI Ya-xing XI Sheng-li and ZHAO Jiu-ran |
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| Institution: | Maize Research Center, Beijing Academy of Agriculture & Forestry Sciences, Beijing Key Laboratory of Maize DNA Fingerprinting and Molecular Breeding, Beijing 100097, China,Maize Research Center, Beijing Academy of Agriculture & Forestry Sciences, Beijing Key Laboratory of Maize DNA Fingerprinting and Molecular Breeding, Beijing 100097, China,Maize Research Center, Beijing Academy of Agriculture & Forestry Sciences, Beijing Key Laboratory of Maize DNA Fingerprinting and Molecular Breeding, Beijing 100097, China,Maize Research Center, Beijing Academy of Agriculture & Forestry Sciences, Beijing Key Laboratory of Maize DNA Fingerprinting and Molecular Breeding, Beijing 100097, China and Maize Research Center, Beijing Academy of Agriculture & Forestry Sciences, Beijing Key Laboratory of Maize DNA Fingerprinting and Molecular Breeding, Beijing 100097, China |
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| Abstract: | Field experiment was conducted with six planting densities by using sweet corn varieties Jingketian183 and Jingketian533, in order to illustrate the effects of planting density on plant growth, yield, and product quality of sweet corn. The results showed that, yields of two varieties were increased, ear length and diameter, ear rate of first grade, ear rate of top grade, and soluble solids contents(SSC) in kernels were decreased with the increasing of planting densities. Yield of Jingketian183 and Jingketian533 showed a significant increase when planting densities increasing to 52 500, 45 000 plants/ha, and the output increase was not obvious as planting densities continue to increase. In terms of product quality, rate of first grade and top grade of Jineketian183 began to significantly decrease when planting densities increasing to 52 500 plants/ha, and that of Jingketian533, ear length, SSC of both varieties began to significantly decrease when planting densities increasing to 60 000 plants/ha. For Jingketian183 and Jingketian533, the suitable density was 52 500 plants/ha and 45 000-52 500 plants/ha respectively. |
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| Keywords: | Sweet corn Planting density Commodity characteristic Soluble solids |
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