| 引用本文: | 张 玉, 秦华东, 黄 敏, 江立庚, 徐世宏.氮肥运筹对免耕水稻根系生长、根际土壤特性及产量的影响[J].广西植物,2014,(5):681-685.[点击复制] |
| ZHANG Yu, QIN Hua-Dong, HUANG Min,
JIANG Li-Geng, XU Shi-Hong.Effect of different nitrogen application modes on root growth,rhizosphere soil characteristics and rice yield under no-tillage[J].Guihaia,2014,(5):681-685.[点击复制] |
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| 氮肥运筹对免耕水稻根系生长、根际土壤特性及产量的影响 |
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张 玉1,2, 秦华东1,3, 黄 敏1, 江立庚1*, 徐世宏4
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1. 广西大学 作物栽培学与耕作学重点实验室, 南宁 530005;2. 广西农业科学院 玉米研究所, 南宁
530227;3. 广西大学 图书馆, 南宁 530005;4. 广西农业技术推广总站, 南宁 530022
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| 摘要: |
| 为探索氮肥运筹对免耕条件下水稻根系生长以及对根际土壤特性、产量的影响,以金优253为材料进行试验。结果表明:平衡施肥显著提高单株根系干重、根长、单株生物量、根半径、单株根表面积、根长密度及根系活力,实收单产高于重穗肥和重基肥处理,且与重基肥差异达95%的显著水平,主要是有效穗数、结实率的增加。平衡施肥显著提高0～10 cm土层的0～2 mm根际土壤有机质、碱解氮含量及脲酶、蔗糖酶活性。因此平衡施肥能明显促进免耕水稻根系生长和有效穗数的增加,对提高水稻产量具有促进作用。 |
| 关键词: 氮肥运筹 免耕水稻 根系生长 根际土壤 产量 |
| DOI：10.3969/j.issn.1000-3142.2014.05.018 |
| 分类号:Q945.12 |
| 基金项目: |
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| Effect of different nitrogen application modes on root growth,rhizosphere soil characteristics and rice yield under no-tillage |
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ZHANG Yu1,2, QIN Hua-Dong1,3, HUANG Min1,
JIANG Li-Geng1*, XU Shi-Hong4
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1. Key Laboratory of Crop Cultivation and Farming System, Guangxi University, Nanning 530005, China;2. Institute of
Maize Research, Guangxi Academy of Agricultural Sciences, Nanning 530227, China;3. Library of Guangxi University,
Nanning 530005, China;4. Guangxi Agricultural Technology Extension General Station, Nanning 530022, China
1. Key Laboratory of Crop Cultivation and Farming System, Guangxi University, Nanning 530005, China; 2. Institute of
Maize Research, Guangxi Academy of Agricultural Sciences, Nanning 530227, China; 3. Library of Guangxi University,
Nanning 530005, China; 4. Guangxi Agricultural Technology Extension General Station, Nanning 530022, China
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| Abstract: |
| The effect of nitrogen application modes on root growth,rhizosphere soil characteristics and rice yield under no-tillage and cast transplanting rice was studied. The results showed that balanced fertilization made obvious influence on no-tillage and cast transplanting rice root growth,and physiology. The rice shoot dry weight and biomass per plant,root number,root density,root activity of balanced fertilization were higher than other treatments,the differences were significant in rice later growth. However,there were no significant differences in root length. Balanced fertilization increased spike lets per panicle and seed set. Balanced fertilization significantly increased 0-10 cm soil layers organic,available nitrogen and urease activity of 0-2 mm rhizosphere soil in rice late growth. Therefore,it can been concluded that balanced fertilization acquired higher grain yield by improving rhizosphere soil,promoting root growth and increasing effective panicles. |
| Key words: nitrogen application modes no-tillage rice root growth rhizosphere soil yield |
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