干旱地区农业研究Issue(5)：84-92,9.
黄土丘陵区（庄浪）旱作马铃薯全膜覆盖关键技术集成研究
Research on the key technologies of whole plastic-film mulching of potato in loess hilly region
摘要
Abstract
In order to establish the best mode for plastic-film mulching and improve the rainfall use efficiency of potato production in loess hilly region,the effects of mulching degree,mulching time,ridge type,and ridge height on yield,economic benefit,and water use efficiency were investigated under different annual rainfall conditions in 201 1-2013 .The results showed that mulching degree,mulching time,and ridge type were the key factors for potato produc-tion,and ridge height significantly influenced on yield in dry year,with the order of mulching degree >ridge type >mulching time >ridge height .Mulching degree significantly influenced on yield,economic benefit and water use effi-ciency with the following order:whole plastic-film mulching >half plastic-film mulching >no mulching .Compared with no mulching,the yield,weight of large and medium tuber,and water use efficiency of whole plastic-film mulching were increased by 21.2%,23.63%,and 26.19%,and that of half plastic-film mulching by 16.1%,10.91%,and 16 .62%,respectively .Ridge type also had significant influence on yield .Autumn mulching showed the largest effect a-mong three mulching time .Compared with mulching before sowing,yield and water use efficiency of autumn were in-creased by 15 .31%and 14.56%,respectively.The effect of ridge height on potato production depended on annual rain-fall .High ridge showed favorable effect in rainy years,whereas the opposite was true in the drought year .Under the av-erage annual rainfall from 201 1 to 2013,yield and water use efficiency of low and medium ridge were increased by 1 .72%,1 .79%,3 .61%,and 2 .76%,as compared with the high ridge .The yield,economic benefit,and water use efficiency of double and medium ridges and ridge planting with whole plastic-film mulching were 49 .16%,78 .06%, and 56 .79%higher than that of no mulching,and 23 .07%,43 .93%,and 24 .25% higher than that of ridge side planting with whole plastic-film mulching .These method is suggested be used for potato production in loess hilly region .关键词
双垄垄播/中垄型秋季覆膜/地膜全覆盖/黄土丘陵区/旱作/马铃薯Key words
double ridge and ridge planting/medium ridge with mulching in autumn/whole plastic-film mulching/loess hilly region/dryland farming/potato分类
农业科技引用本文复制引用
张立功,马淑珍..黄土丘陵区（庄浪）旱作马铃薯全膜覆盖关键技术集成研究[J].干旱地区农业研究,2014,(5):84-92,9.基金项目
庄浪县农业技术推广中心自选项目 （）
