| Effect of nitrogen and phosphorus on growth characteristics and yield of castor in medium saline soil |
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| DOI：10.7606/j.issn.1000-7601.2014.06.017 |
| Key Words: castor nitrogen phosphorus growth characteristics yield yield component |
| Author Name | Affiliation | | ZHOU Gui-sheng1,2, ZHANG Zhi-dong3, LU Shi-yuan1,2, ZHAI Fu-yan1,2, TONG Chen1,2, XIA Yu-rong1,2 | (1.扬州大学江苏省作物遗传生理重点实验室， 江苏 扬州 225009； 2.扬州大学农业部长江中下游作物生理生态栽培重点实验室， 江苏 扬州 225009
3.内蒙古自治区发展研究中心， 内蒙古 呼和浩特 010098） |
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| Abstract: |
| The field experiment with “Zibi 8” was conducted to investigate the effect of nitrogen and phosphorus application on growth characteristics, dry matter accumulation, yield and yield component of castor in medium saline soil. The results showed that nitrogen and phosphorus had no significant effect on the number of main stem leaf, but had significant effect on plant height and dry weight (from budding stage) and dry weight of leaf, stem and inflorescence (from seeding stage). There was significant effect of nitrogen on the spike number per plant, but there was no significant effect of nitrogen and phosphorus on it. There existed significant effect of nitrogen and phosphorus on grain number per spike, 100-grain weight and yield of castor. A positive correlation was detected between dry weight of shoot and yield during flowering, post-flowering and filling and ripening stage. Increased dry weight accumulation after anthesis was beneficial to enhancing grain yield. The yield of treatment with 225 kg·hm-2 N and 90 kg·hm-2 P2O5 was the highest, reaching up to 3 568.4 kg·hm-2. |
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