| 引用本文： |
-
王晴晴，田长彦，赵振勇，张 科，王梓宇.不同施氮量对蓖麻产量和生物及营养性状的影响[J].大英文模板1,2014,(3):150-154. [点击复制]
- WANG Qing-qing, TIAN Chang-yan, ZHAO Zhen-yong, ZHANG Ke, WANG Zi-yu.Effects of nitrogen levels on yield and biological and nutritional characters of castor[J].大英文模板1,2014,(3):150-154. [点击复制]
|
|
| 摘要: |
| 为确定绿洲灌溉区蓖麻栽培的最佳施氮量，采用田间试验方法，对不同施氮量下蓖麻产量和生物、营养性状的变化规律进行了研究。结果表明：(1) 通过数据拟合得出：蓖麻种植的最佳施氮量为195 kg·hm-2，预计最高产量为8×103 kg·hm-2；(2) 蓖麻株高、茎粗和穗数等生物性状总体上随施氮量提高逐渐增大，而主穗长、主穗种仁数、百粒重及产量均随施氮量增加呈现出抛物线变化趋势，其中产量峰值出现在施氮量200 kg·hm-2时，其余指标均在施氮量150 kg·hm-2时达到最高值；(3) 在花果期，增加氮肥施用量能够促进蓖麻对氮素和钾素的积累，磷素积累量随施氮量增加呈抛物线上升的趋势，峰值出现在施氮量150 kg·hm-2时；(4) 施氮量与叶片氮素、磷素含量表现出明显的相关性。蓖麻在灌浆期对钾素的需求很高，叶片钾素大量转移到穗部。 |
| 关键词: 施氮量 蓖麻 株高 茎粗 种仁数 百粒重 产量 叶片养分含量 |
| DOI： |
|
| 基金项目:中国科学院西部行动计划（KZCX2-XB3-07）； 国家科技支撑计划项目(2011BAD29B06) |
|
| Effects of nitrogen levels on yield and biological and nutritional characters of castor |
| WANG Qing-qing1，2, TIAN Chang-yan1, ZHAO Zhen-yong1, ZHANG Ke1, WANG Zi-yu3 |
| () |
| Abstract: |
| A field experiment was conducted to investigate the effects of nitrogen(N) application on yield, biological and nutritional properties of castor in irrigated oasis area, with six N levels, including 0 kg·hm-2 (N0), 50 kg·hm-2 (N50), 100 kg·hm-2 (N100), 150 kg·hm-2 (N150), 200 kg·hm-2 (N200) and 250 kg·hm-2 (N250). The results showed that, (1) the best N application was 195 kg·hm-2, and it could produce the highest castor yield (8×103 kg·hm-2). (2) N application could promote biologi
cal character of castor e.g. plant height, stem diameter, number of ears. Main ear length, number of seeds, hundred-grain weight and yield of castor showed increase under appropriate N application (150 kg·hm-2 or 200 kg·hm-2). (3) At flowering stage, the accumulation of N and potassium(K) of castor plant increased with N application, with the rate of 150 kg·hm-2 having the largest effect on phosphorus(P). (4) There existed a positive relation between the rate of N application and the contents of leaf N and P. In addition, at filling stage, K in leaf was transferred to panicle, it suggested castor need abundant K at this stage. |
| Key words: N application castor plant height stem diameter number of seeds hundred-grain weight yield leaf nutrient content |
