| 肖占文,张俐,刘金荣.人工种植红豆草对灰棕荒漠土改土效应的研究[J].干旱地区农业研究,2011,29(3):199~202 |
| 人工种植红豆草对灰棕荒漠土改土效应的研究 |
| Effect of planting sainfoin on the improvement of qray -brown desert soil |
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| DOI：10.7606/j.issn.1000-7601.2011.03.37 |
| 中文关键词: 灰棕荒漠土 红豆草 改土培肥 经济效益 |
| 英文关键词:gray-brown desert soil sainfoin soil improvement economic benefits |
| 基金项目:甘肃省科技支甘项目(2010-006) |
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| 中文摘要: |
| 在甘肃河西走廊的灰棕荒漠土上,进行了人工种植红豆草对灰棕荒漠土改土效应的研究,结果表明:3年生红豆草鲜草产量64.50 t/hm2,折干草22.57 t/hm2,产值为1.47万元/hm2;与CK比较,0~20 cm耕层田间持水量、团聚体、总孔隙度分别增加12.05%、18.33%和15.47%,容重、pH分别降低0.41 g/cm3和0.70,全盐由5.15 g/kg降低到2.19g/kg,脱盐率达到57.48%;有机质,速效N、P、K亦随之增加。 |
| 英文摘要: |
| In gray-brown desert soil in Hexi Corridor of Gansu, a study was carried out on the effect of planting
sainfoin on the improvement of qray brown desert soil. The results showed that the fresh qrass yield of 3-year old sainfoin was 64.50 t/hm2，equalling hay 22.57 t/hm2，and the output value was 14, 700 yuan/hm2; compared with CK，0~20 cm topsoil field capacity，aggregates, total porosity increased by 12.05%，18. 33% and 15. 47%, while the bulk den-sity and pH decreased by 0.41g/cm3 and 0.70, respectively; the total salt reduced from 5.15 g/kg to 2.19 g/kg,
with a desalination rate of 57.48%; and organic matter and av ailable NPK also increased. |
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