(The Academy of Landscape,Shangqiu University,Shangqiu,et al.Effect of Different Water Gradient and Consumption of Nitrogen Fertilizer on Growth and Production of Ipomoea akuatica Forsk.[J].Northern Horticulture,2015,39(21):163-166.[doi:10.11937/bfyy.201521043]
不同水分梯度与氮肥施用量对蕹菜生长及产量的影响
- Title:
- Effect of Different Water Gradient and Consumption of Nitrogen Fertilizer on Growth and Production of Ipomoea akuatica Forsk.
- Keywords:
- Ipomoea akuatica Forsk.; water gradient; nitrogen fertilizer; growth; production
- 文献标志码:
- A
- 摘要:
- 以蕹菜（Ipomoea akuatica Forsk.）品种“白花子蕹”为研究材料，在商丘学院实验田研究了不同水分梯度（土壤含水量分别为田间持水量的70%~80% (S1处理)、80%~90%(S2处理)和90%~100% (S3处理)）和氮肥施用量（分别追施0(D0处理,CK)、120(D1处理)、135(D2处理)、150(D3处理)kg/hm2的氮肥）对蕹菜叶绿素含量、单株叶片数目与单株生物量的影响。结果表明：水分梯度对叶绿素含量和单株叶片数目的影响不显著，但除了最高和最低氮肥施用量外，叶绿素含量和单株叶片数目均随水分梯度升高而升高，且除最低水分梯度下的单株鲜重和最低氮肥条件下的单株干重外，单株鲜重和单株干重均随水分梯度升高而显著升高；除最低水分梯度下的单株鲜重外，叶绿素含量、单株叶片数目、单株鲜重和单株干重均随氮肥施用量增加而显著升高，但在较高的2种氮肥施用量之间差异不显著。综上，在栽培过程中，土壤含水量为田间持水量的90%~100%，追施135 kg/hm2的氮肥最有利于蕹菜的生长和产量的提高且节约肥料。
- Abstract:
- With a cultivated variety of Ipomoea akuatica Forsk. named ‘Baihua Zi Weng’ as experiment material,in the experiment field of Shangqiu Universtity，the content of chlorophyll，the numbers of leaves and the biomass per plant of Ipomoea akuatica Forsk. under different water gradient (soil moisture content were 70%-80%(S1)，80%-90%(S2) and 90%-100%(S3) of field capacity respectively) and nitrogen fertilizer (consumption of after nitrogen fertilizer was set as：0(D0,CK)，120(D1)，135(D2) and 150(D3) kg/hm2 of 46% urea respectively) were studied.The results showed that，though water gradient didn’t have significant effect on the content of chlorophyll and the numbers of leaves per plant，but the content of chlorophyll and the numbers of leaves per plant both increased as water gradient increased except for that under the highest and the lowest consumption of nitrogen fertilizer；in addition，except for fresh weight per plant at the lowest water gradient and dry weight per plant at the lowest consumption of nitrogen fertilizer，water gradient did have significant effects on both fresh weight and dry weight per plant；at last，except for fresh weight per plant at the lowest water gradient，the content of chlorophyll，the numbers of leaves，fresh weight and dry weight per plant were significantly increased as consumption of nitrogen fertilizer increased，but they weren’t significantly different between the two higher consumption of nitrogen fertilizer.All above，growth and production of Ipomoea akuatica Forsk. both were the highest when soil moisture content was 80%-90% of field capacity and after nitrogen fertilizer was 135 kg/hm2，besides this treatment could save fertilizer.
参考文献/References:
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备注/Memo
作者简介：王爱波（1983-），女，硕士，讲师，研究方向为植物种子生态学和作物栽培学。E-mail：ab0629@126.com.基金项目：国家自然科学基金青年基金资助项目（41301051）；河南省重点科技攻关资助项目（122102110178）。