摘要
１９９０～１９９４年在地处黄土高原的山西隰县坡旱地进行了集水深蓄耕作效应研究。结果表明：与常规耕作相比，采取耕翻地孔或耕翻深松，０～２００ｃｍ土层贮水量增加５０．８ｍｍ和５４．８ｍｍ；地面径流量减少５７．８％和５２．８％，土壤侵蚀量减少５８．０％和５３．５％；降低土壤温度０℃和１．２℃；连续覆盖４年，土壤有机质提高了１．７ｇ／ｋｇ，速效钾提高了１５．９ｍｇ／ｋｇ；小麦单产提高２３．５％和２７．７％；水分利用率提高了０．０４３ｋｇ·（ｍｍ－１·亩－１）和０．０６８ｋｇ·（ｍｍ－１·亩－１）。
The trails of tillage techniques of water
harvest and storage on rainfedsloping farmlands were carried out in three years running from
1990 to 1994.The re-sults indicated that after the adoptation of shallow tillage and ground─
hole or shallowtillage and subsoiling techniques,there were an increase of 50. 8mm and
54.8mm ofwater in 0─200 cm soil layer,a reduction of 57.8%and 52.8%of surface
runoff,58.0%and 53.5%of soil eroded and a drop of 0℃ and 1.2℃ in soil temperature,and
in-crease of 1.17g/kg in soil organic matter and increase of 15.9mg/kg in available K;andan
increase of 23.55 and 27.7%of wheat yield per unit area and an increase of 0.043kg.mm-1 and
0.068kg·mm-1 in water use efficiency in comparison with the conventionalcultivation meted.
出处
《干旱地区农业研究》
CSCD
北大核心
1994年第4期31-36,共6页
Agricultural Research in the Arid Areas
关键词
土壤耕作
浅耕深松
秸杆覆盖
坡旱地
蓄墒
Soil tillage,shallow tillage and subsioling ,straw mulching ,rainfedsloping
land,moisture storage,winter wheat
