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| 灌水量和种植密度的配置对干热河谷紫甘蓝生物量分配、产量及水分利用效率的影响 | |
| 引用本文： | 李建查,李坤,潘志贤,孙毅,方海东,史亮涛,张雷,岳学文. 灌水量和种植密度的配置对干热河谷紫甘蓝生物量分配、产量及水分利用效率的影响[J]. 中国农学通报, 2021, 37(26): 50-57. DOI: 10.11924/j.issn.1000-6850.casb2020-0591 |
| 作者姓名： | 李建查 李坤 潘志贤 孙毅 方海东 史亮涛 张雷 岳学文 |
| 作者单位： | 1.云南省农业科学院热区生态农业研究所,云南元谋 651300;2.云南省水利水电科学研究院,昆明 650228 |
| 基金项目： | 云南省重点研发计划项目“云南省干热河谷区生态修复技术研究与产业化示范”(2019BC001-02) |
| 摘 要： | 为了揭示灌水量和种植密度配置下干热河谷紫甘蓝(Brassica oleracea var.capitata rubra)产量形成机理,研究了不同灌水量5800 m3/hm2(I1)、4900 m3/hm2(I2)、4600 m3/hm2(I3)和不同种植密度79200株/hm2(D1)、52800株/hm2(D2)、3... |
| 关 键 词： | 紫甘蓝 生物量分配 水分利用效率 灌水量 种植密度 干热河谷 |
| 收稿时间： | 2020-10-26 |
Effects of Irrigation Amount and Planting Density on Biomass Allocation,Yield and Water Use Efficiency of Purple Cabbage in Arid-hot Valley |
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| Li Jiancha,Li Kun,Pan Zhixian,Sun Yi,Fang Haidong,Shi Liangtao,Zhang Lei,Yue Xuewen. Effects of Irrigation Amount and Planting Density on Biomass Allocation,Yield and Water Use Efficiency of Purple Cabbage in Arid-hot Valley[J]. Chinese Agricultural Science Bulletin, 2021, 37(26): 50-57. DOI: 10.11924/j.issn.1000-6850.casb2020-0591 | |
| Authors: | Li Jiancha Li Kun Pan Zhixian Sun Yi Fang Haidong Shi Liangtao Zhang Lei Yue Xuewen |
| Affiliation: | 1.Institute of Tropical Eco-agricultural Sciences, Yunnan Academy of Agricultural Sciences, Yuanmou Yunnan 651300;2.Yunnan Institute of Water Resource and Hydropower Research, Kunming 650228 |
| Abstract: | The study is to assess the effects of irrigation amount and planting density on biomass characteristics, yield, and water use efficiency of purple cabbage. The configuration effects of irrigation amount (I1 5800 m3/hm2、I2 4900 m3/hm2、I3 4600 m3/hm2) and planting density (D1 79200 plants/hm2、D2 52800 plants/hm2、D3 39600 plants/hm2) on biomass characteristics, yield and water use efficiency of purple cabbage were studied. The results showed that the fresh weight of leaf and stem, and the fraction of stem of purple cabbage were significantly affected by the irrigation amount. The allometric coefficients of outer leaf to above-ground biomass reduced with the decrease of irrigation water, so more biomass was distributed to the outer leaf of purple cabbage. The fresh and dry weight of leaf, stem and cabbage head, as well as the total biomass, increased significantly with the decrease of planting density. With decreased planting density, the fraction of outer leaf decreased significantly, but the fraction of cabbage head increased. There was no significant difference in the allometric growth of biomass in each treatment. Planting density was the main factor affecting the biomass characteristics of purple cabbage. There was a small effect of irrigation amount on the biomass of purple cabbage and the interaction between irrigation amount and planting density on biomass characteristics in purple cabbage was not significant. The principal component analysis (PCA) scores of biomass characteristics and the water utilization efficiency of I2D3 treatment were the highest, while its economic yield was good, so the I2D3 was the best among all the treatments. The study can provide a basis for high yield and high-efficiency production of purple cabbage in arid-hot Valley. |
| Keywords: | purple cabbage biomass allocation water use efficiency irrigation amount planting density Arid-hot Valley |
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