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一、前言近几年来,我国花生产区的许多社队和科研单位,应用“比久”抑制花生后期徒长,取得了明显的效果。试验结果表明,在花生生长过旺的地块,特别是在培创花生高产的情况下,喷施“比久”后,能显著地抑制茎的伸长,提高饱果率,增加产量。为了探讨“比久”促进花生增产的原因,广东省植物所曾用碳~(-14)进行了研究,证明了“比久”能够降低同化产物在茎中的分配率,增加荚果中光合产物的分配率。但“比久”对不同叶片碳素同化产物运转分配的影响,对花生根系吸收磷
I. Introduction In recent years, many communes and research institutes in the flower-producing area of China have applied “long-term” control of the late peanut growth and achieved remarkable results. The results showed that after the “long time” spraying, the elongation of the stem was significantly inhibited, the full fruit rate was increased and the yield was increased in the peanut over-growing plots, especially in Pei-chuang peanut. In order to explore the reason why “Bijiu” can promote the peanut yield increase, Guangdong Institute of Botany used carbon- (-14) to study and proved that Bijiu can reduce the assimilation rate in the stem and increase photosynthate in the pod Distribution rate. However, the effects of “longjiu” on the operation and distribution of carbon assimilation products from different leaves, the absorption of phosphorus