稻作制、绿肥和地下水位对水稻土钾素状况的影响  

EFFECTS OF CROPPING SYSTEM, MANURING AND GROUNDWATER LEVEL ON STATUS IN RED EARTH PADDY SOIL

作　　者：张杨珠[1] 袁正平[1] 萧永兰 蒋健容[1] 黄祥华 

机构地区：[1]湖南农学院农学系,长沙410128 [2]常德市鼎城区叉二港农技站,湖南常德415100

出　　处：《湖南农学院学报》1992年第3期547-555,共9页

摘　　要：采集湖南农学院土壤教研室的不同稻作制、绿肥施用量和地下水位三因子多水平长期定位试验的土壤,对其不同形态钾的剖面分布、耕层土壤速效钾的动态变化以及酸提取钾总量进行了研究。A long-term fixed-location experiment with the combination of threerice-based cropping system, three manuring rates and two groundwater levels hasbeen designed, and performed to examine the effects of the rice-based croppingsystems, manuring rates and groundwater levels on the profile distributions ofdifferent soil K fractions, kinetics of soil steadily-available K and acid-extractableK contents of plough layer.

关 键 词：水稻土 耕作制度 绿肥 水位 钾素 

分 类 号：S511.106[农业科学—作物学]