大豆品种竞争能力和籽粒产量关系研究

盆栽试验方法研究充分供水(W)、适度干旱(M)和严重干旱(D)三种条件下,不同株型的两个大豆品种晋大74和晋豆24在混播和单播时的籽粒产量及生物量构成。结果表明:晋大74品种具有较高的植株生物量和较强竞争能力,在单播时籽粒产量较低,而竞争能力较低的晋豆24品种在单播时籽粒产量却较高,这一结论将对大豆株型设计提供一定的科学依据。

Pot experiment is conducted on two soybean varieties Jinda74 and Jin24.Grain yield and biomass components of the two cultivars either in monoculture or mixture are investigated under three water levels:wet(85% of the field water capacity,85% FWC),mild drought(60% FWC) and drought drought(40% FWC).The result indicates that relatively big size of plant shoot biomass and root system of Jinda74 is advantage for its competition ability but not the monoculture grain yield,while Jin24 weaker in competition ability...