大豆植株之乾物質累積與分布

Abstract

本研究測定大豆重要生育期植株各部位（葉片、葉柄、莖桿、根、莢果壁與種子）乾重之變化情形，探討春、夏作大豆乾物質累積與分配之差異及與產量之關係。大豆植株自生育初期便逐漸累積乾物質，在但養生長期間，夏作營養器官乾重較高，當植株進入生殖生長期後，春作由於營養生長旺盛，反有較大的營養器官乾物累積。全株營養器官在R4-R5，生殖器官在R7達最大乾物質累積量。夏作大豆之乾物質生產力較高，高雄3號與十石分別爲8,210與6,480kg/ha，春作二品種分別僅有6,340與4,130kg/ha。Two soybean varieties, Kaohsiung No. 3 (KS-3) and Shih-Shih (SS), were grown in the summer crop of 1981 and spring crop of 1982 at the experimental farm of Taiwan Agricultural Research Institute. Dry weight of various plant parts was determined to investigate the differences of dry matter accumulation and partitioning pattern between two crop seasons and their relation to seed yield.