农牧一体化生产模式下玉米干物质累积和分配研究

Research on Dry Matter Accumulation and Distribution of Corn in the Agro-pastoral Integration Model

为了解农牧一体化下"玉米田养鹅"生产模式对玉米干物质累积的影响,通过对比试验方法开展田间试验。结果表明:(1)"玉米田养鹅"生产模式对玉米营养器官干物质分配比例无明显影响;(2)玉米田养鹅处理下鹅除了蚕食部分下层玉米叶片外,可以起到除草的作用,使养分集中供给玉米,以至于在成熟期与常规处理在净初级生产力上并无显著差异;(3)各处理玉米干物质累积基本符合Logistic"S"增长,拟合结果较好。

In order to understand the effect of ＂raising geese in corn fields＂ production mode on dry matter accumulation of maize under agro-pastoral integration, field experiments were carried out by means of comparative test method. The results showed that： （1） there was no significant effect on the dry matter distribution in the vegetative organs of maize under the ＂raising geese in cornfields＂ production mode; （2） herbicides reduced the antagonism of weeds in conventional treatment, and the total dry matter accumulation of the system was higher, and the dry matter accumulation of maize in control group was significantly lower than that in conventional treatment at reproductive growth stage because of the competition of weeds on resources; （3）the dry matter accumulation of the treated corn basically accorded with the increase of Logistic ＂S＂, and the fitting result was good.