用单叶重速测青贮玉米单株总叶面积

WITH INDIVIDUAL LEAF WEIGHT ESTIMATING RAPIDLY LEAF AREA PER PLANT IN SILAGE MAIZE

研究了苗期（４叶期）、拔节期和灌浆期的“白马牙”玉米（ＺｅａｍａｙｓＬ．）每层叶鲜重（或于重）与单株总叶面积的回归方程．结果表明，接从上至下的顺序排叶序．则苗期的第三层叶、拔节期的第四层叶和灌浆期的第十层叶的鲜重（或干重）分别与该期的单株总叶面积呈最显著的正相关，可分别用来快速估测该生育时期的单株总面积．

n seedling stage(4 leaf stage),jointing stage,and milk stage the linear regression equations of individual fresh weight(or dry weight)with total plant leaf area of White Horse Tooth maize(zea mays L. )were studied. The results indicated that the fresh weight (or dry weight) of the third leaf (leaves were numbered from the top of the plant)in seedling stage,fourth leaf in jointing,and tenth leaf in milk stage with total plant leaf area in same stage had the most significant positive correlation respectively,and the regression equation could estimate rapidly the total plant leaf area in the stage respectively.