| 王 雨，赵 权，孔德章，周 良，王 炎，李振宙，黄小燕，黄凯丰.化学肥料调控对连作甜荞生长的影响[J].广东农业科学,2018,45(4):87-93 |
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化学肥料调控对连作甜荞生长的影响 |
| Effect of chemical fertilizers regulation on the growth of Fagopyrum esculentum with continuous cropping |
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| DOI：10.16768/j.issn.1004-874X.2018.04.013 |
| 中文关键词: 甜荞 肥料处理 根际微生物 土壤酶活性 连作障碍 |
| 英文关键词: Fagopyrum esculentum fertilizer treatment rhizospheric microorganism soil enzyme activity continuous cropping obstacle |
| 基金项目:国家自然科学基金（31560358，31360318）；贵州省普通高等学校荞麦栽培生理及推广特色重点实验
室建设项目（黔教合KY 字[2015]328） |
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| 中文摘要: |
| 以甜荞品种丰甜1 号为试验材料，研究不同化学肥料处理对甜荞根际土壤、根系形态、农艺性
状及产量的影响，以及单施氮磷钾肥和复合肥处理对甜荞连作障碍的缓解作用。结果表明，施用复合肥能
显著增加丰甜1 号甜荞根际土壤微生物的数量、蔗糖酶和过氧化氢酶的活性，各肥料处理间甜荞的农艺性
状和根系长度等形态指标差异均达显著水平，表现为NPK>N>P>K>CK；产量表现为NPK>N>P>K>CK，且
依次比对照增产5.3、2.7、2.4、1.1 倍。相关性分析结果表明，复合肥处理和单施氮肥处理的丰甜1 号产量
与农艺性状、根系形态（除根系的平均直径外）均呈极显著正相关，磷肥处理的产量与百粒重和叶面积呈
极显著正相关，钾肥处理的产量与百粒重呈极显著正相关。说明单施氮、磷、钾肥和复合肥均能在不同程度
上缓解甜荞的连作障碍，作用效果表现为NPK>N>P>K。 |
| 英文摘要: |
| The Fagopyrum esculentum‘ cv. Fengtian 1’ was used as the experimental material to investigate
the changes in the rhizosphere soil root morphology，agronomic traits and yield of common buckwheat with different
chemical fertilizer. The effects of single application of nitrogen，phosphorus，potassium fertilizer and compound
fertilizer on the resistance of common buckwheat to continuous cropping obstacle were also relieved. The results
showed that applying compound fertilizer could significantly increase the number of soil microorganisms in common
buckwheat root，the activity of sucrose and catalase，and the morphological indexes such as agronomic characters and
root length in the treatment of different fertilizers reached a significant level. The performance is NPK>N>P>K>CK，
and the yield is also expressed NPK>N>P>K>CK，which in turn increased by 5.3，2.7，2.4 and 1.1 times more than
the control. Correlation studies showed that the yield of common buckwheat had a significant positive correlation with
agronomic traits and root morphology（ except average diameter） with the compound fertilizer and single nitrogen
fertilizer. Treated with the phosphate fertilizer，yield was extremely significant positive correlation with hundred kernel
weight and leaf area. Treated with the potash fertilizer，yield was significantly positive correlation with hundred grain
weight. Single application of nitrogen，phosphorus and potassium fertilizer and compound fertilizer could relieve the
continuous cropping obstacle of common buckwheat in varying degrees，and the effect is expressed as NPK> N> P>K. |
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