| 地下滴灌对苜蓿的生长发育与种子产量的影响 |
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| 引用本文： | 孟季蒙,李卫军.地下滴灌对苜蓿的生长发育与种子产量的影响[J].草业学报,2012,21(1):291-295. |
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| 作者姓名： | 孟季蒙 李卫军 |
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| 作者单位： | 1. 新疆草地资源与生态重点实验室新疆农业大学草业与环境科学学院,新疆乌鲁木齐830052;新疆农垦科学院,新疆石河子832000
2. 新疆农垦科学院,新疆石河子,832000 |
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| 基金项目： | 国家牧草产业技术体系项目 |
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| 摘 要： | 为了提高苜蓿种子产量和效益，把地下滴灌引入苜蓿种子生产试验，通过对地下滴灌的水盐分布、苜蓿生长特性和种子产量等方面的研究，探讨地下滴灌应用于苜蓿种子生产的可行性和效果。结果表明，在田间相对持水量的６５％～８０％（Ｗ１）水量下，湿润体的体积最大，水平最大湿润半径均为５０ｃｍ。垂直最大湿润半径为２０ｃｍ。水分能够到达４０ｃｍ×８０ｃｍ 宽窄行播种方式下苜蓿的根系位置；Ｗ１处理所得根干物质积累量最高，为２５．０９ｇ，显著高于其他试验处理（P＜０．０１），根重顺序为Ｗ１＞ＣＫ＞ Ｗ２＞ Ｗ３。并且，Ｗ１ 处理种子产量最高，为９０９．６２ｋｇ／ｈｍ２，极显著高于对照的种子产量（６１１．３９ｋｇ／ｈｍ２）（P＜０．０１）。说明地下滴灌应用于苜蓿种子生产，能够起到增产效果。
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| 关 键 词： | 地下滴灌 苜蓿 生长发育 种子产量 |
Effects of subsurface drip irrigation on alfalfa growth and seed production |
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| MENG Ji-meng
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LI Wei-jun.Effects of subsurface drip irrigation on alfalfa growth and seed production[J].Acta Prataculturae Sinica,2012,21(1):291-295. |
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| Authors: | MENG Ji-meng LI Wei-jun |
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| Institution: | 1(1.Xinjiang Key Laboratory of Grassland Resource and Ecology,College of Pratacultural Engineering of Xijiang Agricultural University,Urumqi 830052,China;2.Xinjiang Academy of Agricultural Reclamation Sciences,Shihezi 832000,China) |
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| Abstract: | To increase the output and profitability of alfalfa seeds,subsurface drip irrigation(SDI) was introduced into a production experiment of alfalfa seeds.Through the study of salt distribution of SDI in the soil and the growth characteristics of alfalfa,the possible uses and effectiveness in alfalfa production were explored.The biggest moisture content of SDI was 65%-80% of the soil moisture(W1) and the biggest radius was 50 cm horizontally and 20 cm vertically enabling water to reach the roots of alfalfa.The W1 root weight was significantly(P<0.01) higher(25.09 g) than that of the other treatments and the root weight sequence was W1>CK(flooding irrigation)>W2(50%-65% of the soil moisture)>W3(35%-50% of the soil moisture).The seed yield of W1 was significantly(P<0.01) higher(909.62 kg/ha),than that of the CK(611.39 kg/ha).The application of SDI in alfalfa production could increase seed yields. |
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| Keywords: | subsurface drip irrigation alfalfa(Medicago) growth seed yield |
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