间作蚕豆对马铃薯干物质、氮和磷积累的影响

Effects of Interplanting Faba Bean on Accumulation of Dry Matter, Nitrogen, and Phosphorus of Potato

通过田间试验,研究了单作马铃薯、马铃薯/蚕豆间作和单作蚕豆对干物质积累以及氮、磷积累量的影响。结果表明,在马铃薯和蚕豆共生期内,马铃薯植株和各器官干物质累积受到明显的抑制作用,蚕豆收获后,马铃薯各器官干物质累积促进,间作处理马铃薯植株干物质累积为304.03g/株,大于单作处理的298.29g/株。在苗期,间作处理较单作处理对马铃薯根和叶的全氮累积分别提高了36.52%和17.41%,间作对茎全氮累积具有抑制作用,在生长后期间作处理较单作对马铃薯根、茎和叶全氮累积分别提高了68.68%、42.98%和109.48%,促进作用很明显。在苗期间作处理较单作处理对马铃薯各器官全磷累积具有促进作用而在块茎形成期只对根和叶全磷累积有促进作用,但随着生育期推进反而对不同器官全磷累积都起到抑制作用。

The effects of cultivation of 3 treatments： potato only （T1）, potato/faba bean interplanting （T2） and faba bean only （T3） on potato dry matter, nitrogen and phosphorus accumulation were examined by field experiments. We found that the treatment of interplanting potato/faba bean had significant inhibitory effect on dry matter accumulation of different organs of potato than single-planting potato in the symbiotic period during the experiment. After harvest of faba bean, treatment of interplanting faba bean had distinctive stimulant effect on dry matter accumulation of different organs of potato. The potato dry matter of interplanting faba bean and single-planting potato were 304.03g/plant and 298.29g/plant, respectively. At seedling stage the total N of potato root and leaf of interplanting faba bean/potato increased by 36.52% and 17.41%, respectively compared to those in the single-planting potato. However, there was a distinctive inhibitory effect on total N accumulation of the tuber of the interplanting faba bean/potato. The treatment of interplanting faba bean had a stimulative effect on total N accumulation of potato root, stalk and leaf in which increased significantly by 68.68%, 42.98% and 109.48%, respectively compared to the single-planting potato at mature stage. Although the treatment of interplanting potato showed a stimulative effect on total P accumulation of all organs in potato at seedling stage, the stimulative effect only occurred on root and leaf of the potato at tuber initiation stage. Generally the treatment of interplanting faba bean had an inhibitory effect on total P accumulation in all different potato organs compared to single-planting potato with the advance of growth.