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为揭示黄淮海地区高蛋白大豆生长动态及产量的影响,以冀豆21为材料,研究了不同种植密度(16.5万、19.5万、22.5万、25.5万株·hm~(-2))下,高蛋白大豆不同生育期株高、叶面积指数、干物质积累分配等指标生长动态及产量的影响。结果表明:随生育期延长和密度水平增大,株高和叶面积指数均呈上升趋势,均在鼓粒期达到最大;单株及各器官干物质积累量均随密度增加而减小;群体及各器官干物质积累量随密度增加先升高后降低,鼓粒期达到峰值,鼓粒期以后开始下降,以密度22.5万株·hm~(-2)处理最大;单株及群体积累的干物质前期主要用于营养器官生长,后期主要分配给生殖器官;群体植株产量随密度水平增大先增加后减小,当密度为22.5万株·hm~(-2)时,群体产量最高,为3 726.67 kg·hm~(-2)。
In order to reveal the growth dynamics and yield of high-protein soybean in the Huang-Huai-Hai region, the effects of different planting densities (165,000, 195,000, 225,000, 255,000 plants · hm -2) High protein soybean at different growth stages of plant height, leaf area index, dry matter accumulation and distribution and other indicators of growth dynamics and yield. The results showed that the plant height and leaf area index increased with the increase of the growth period and the density, and reached the maximum at the druming stage. The dry matter accumulation of individual plants and organs decreased with the increasing of density. And dry matter accumulation of all organs increased firstly and then decreased with the increase of density, and reached the peak value in drum stage and then decreased after drum stage. The density of 225 000 plants · hm -2 was the highest. The early dry matter was mainly used for the growth of vegetative organs and later was mainly distributed to the reproductive organs. The yield of population plants increased at first and then decreased with the increase of density. When the density was 225,000 hm -2, 3 726.67 kg · hm -2.