中国乾燥地での腐植物質の葉面散布がダイズの生育と収量に及ぼす影響

日本作物学会紀事

礒田 昭弘²  王 培武¹  李 治遠¹  宮内 陽介² 

[1] 烏魯木斉中亜干旱農業環境研究所;千葉大学大学院園芸学研究科

关键词: Arid area;    乾燥地;    Flower number;    開花数;    Humic substance;    腐植物質;    Pod setting;    結莢率;    Seed yield;    子実収量;    Soybean;    ダイズ;   

DOI  :  10.1626/jcs.81.259

学科分类：农业科学（综合）

来源: Nihon Sakumotsu Gakkai / Crop Science Society of Japan

【 摘 要 】

Effects of a foliar spraying of humic substance on growth and yield of soybean were evaluated in Changji (2007, 2008) and Shihezi (2008), Xinjiang, China. The humic substance was applied during the time from the fully expansion of primary leaf to the start of flowering. The humic substance had no significant effect on stem length, node number and branch number, but improved seed yields by 6 to 32%. It increased pod number per plant by increasing pod setting, although there was no significant effect on cumulated flower number. The humic substance did not affect the mean leaf area indices, crop growth rates and net assimilation rates, but increased pod growth rates during the later pod filling period. It also did not affect the CO2 assimilation rate, quantum yield of photosystem II or chlorophyll content. Thus, increasing pod number by plant hormone-like substances in the humic substance was considered to stimulate the translocation of assimilate toward pods, leading to an increase in seed yield. It was concluded that the foliar application of humic substance to soybean was effective in increasing seed yield in the arid areas of Xinjiang, China.

【 授权许可】

Unknown