对吉林省龙井野生大豆自然保护区围栏内的保护地和围栏外撂荒地的野生大豆进行分构件考察取样,并对其形态特征及生物量进行统计分析,结果表明:保护地和撂荒地的野生大豆各构件形态指标及生物量均有极显著差异,保护地野生大豆样本最多有一级分枝,撂荒地最多有二级分枝;撂荒地野生大豆的主茎长、一级分枝长、总茎长、一级分枝数、主茎叶数、一级分枝叶数和总叶数分别是保护地的1.4、4.6、2.6、2.8、1.4、4.0和2.5倍。保护地的野生大豆样本根生物量、总茎生物量、总叶生物量、总生物量分别是撂荒地的75%、25.7%、23.0%、25.9%。可见,适度的干扰有利于野生大豆的生长分化及生物量的积累。经回归分析,29个样本的总生物量随着株高、分枝数、总茎长度、总叶数的增加而增加,其变化规律符合y=a+bx直线回归关系,且均达到显著水平;29个样本的主茎、分枝茎、总茎、主茎叶、分枝叶和总叶生物量随植株总生物量的增加而增加,其变化规律符合y=a+bx直线回归关系,且达到极显著水平。 The samplings were conducted on the components of the wild soybeans in the fences inside the fences of Longjing Wild Soybean Reserve in Jilin Province and in the wild grasslands outside the fences. The morphological characteristics and biomass were statistically analyzed. The results showed that wild and protected wild Soybean morphological indicators and biomass are very significant differences, the protection of wild soybean sample up to a branch, abandoned land up to two branches; shortage of wild soybean main stem length, a branch length, total The length of stem, the number of primary branches, the number of main stems, the number of primary branches and the total number of leaves were 1.4, 4.6, 2.6, 2.8, 1.4, 4.0 and 2.5 times that of the protected areas respectively. Protected wild soybean sample root biomass, total stem biomass, total leaf biomass, and total biomass were 75%, 25.7%, 23.0% and 25.9% of abandoned land respectively. Visible, moderate interference is conducive to the growth and differentiation of wild soybean and biomass accumulation. The regression analysis showed that the total biomass of 29 samples increased with the increase of plant height, branch number, total stem length and total leaf number. The change law was in accordance with the linear regression of y = a + bx, and reached the significant level ; The biomass of main stem, branch stem, total stem, main stem, branch leaf and total leaf of 29 samples increased with the increase of plant total biomass, and the change law accorded with the linear regression of y = a + bx Reached a very significant level.