土壤肥力、叶分析与大白菜产量关系的研究

YIELD OF CHINESE CABBAGE AND SOIL FERTILITY

研究结果表明，土壤肥力、结球初期大白菜中、上部莲座叶内矿质元素含量与大白菜产量和净菜率呈正相关关系，特别是土壤中有机质、速效氨含量与产量的关系最为密切，相关系数分别为ｒ＝０．８５１２，ｒ＝０．９５３５，叶内的氮、磷、钾、钙、铜、铁、锰也与大白菜产量呈显著正相关。分析认为，叶内各矿质元素的含量可作为评估和预测大白菜产量的重要指标之一。

Relationship between yield of Chinese cabbage and soil fertility ,leaf analysis was studied withLubai 8[Brassica campestris L. ssp. pekinesis(Lour) Olsson ] in Taian suburbs , and Fei County moun-tain area from 1991 to 1993. The results showed that there was a correlation between yield of Chinesecabbage and soil fertility, content of various mineral elements of middle and upper rossette leaves inthe beginning of heading ,especially was positive correlation between yield of Chinese cabbage and or-ganic matter and solvable nitrogen in soil,and correlative coetficient was r=0.8512 ,and r=9535respectively.Yield of Chinese cabbage and the content of nitrogen ,phosphorus ,polassium ,copper,iron ,manganese in middle and upper rossette leaves was positive correlation.It was one of importantindexs to value and forecast the yield of Chinese cabbage by analysing content of various mineral ele-ments in middie and apper aossettes leaves.