| 张白鸽1，2，曹 健2，张长远2，宋 钊2，张福锁1，陈新平1.苦瓜的干物质和养分累积与分配规律[J].广东农业科学,2016,43(2):39-44 |
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苦瓜的干物质和养分累积与分配规律 |
| Accumulation and distribution characteristics of biomass and nutrient in bitter gourd（Momordica charantia L.） |
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| DOI： |
| 中文关键词: 关键词：苦瓜 干物质 营养 累积 分配 |
| 英文关键词: Key words：bitter gourd dry matter nutrient accumulation distribution |
| 基金项目: |
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| 摘要点击次数: 2119 |
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| 中文摘要: |
| 理解作物的干物质和养分累积规律是实现作物高产高效的基础。采用大田栽培试验，研究了苦瓜干物质和N、P、K 养分累积动态。结果表明，苦瓜结果前的干物质累积速率慢，累积量仅占整个生育期干物质累积量的4.0%，主要以生产叶片为主；结果期的干物质累积速率快，累积量占全生育期的96%，主要用于叶片和果实的生长；苦瓜养分累积总量表现为K>N>P，且不同生长时期、不同部位的养分累积特征不同。总体上N、P、K 的吸收比例可以归纳为幼苗期至采收初期1.0∶0.1∶1.4，采收盛期至末期1.0∶0.2∶1.6；整个生育期内，平均生产每吨苦瓜所需N 量为4.63 kg，P 为0.72 kg，K 为6.87 kg。 |
| 英文摘要: |
| Elemental uptake and allocation patterns of crops create insight for nutrient management. On-field experiment was conducted to understand the accumulation and distribution characteristics of biomass and nutrient in bitter gourd. The results revealed that 4.0% of dry matter was accumulated in leaves before harvest and 96% of it was accumulated in leaves and fruits from harvest stage to the end. The total absorption of nutrient in bitter gourd was K>N>P.Different organs at various growth stages showed different accumulation trend. Generally ，the ratio of 1.0∶0.1∶1.4 from seedling stage to early harvest stage，and 1.0∶0.2∶1.6 from harvest peak to the end was optimal for bitter gourd.Throughout growth season， to obtain a ton of bitter gourd，the NPK requirement was 4.63 kg，0.72 kg and 6.87 kg，respectively. |
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