菜用大豆秋繁出苗障碍因素的研究

Study on the barrier factors for emerging of the seedling of vegetable soybean

试验结果表明，晒种方法、播种期选择和土壤含水量是影响夏收菜用大豆秋繁出苗、成苗的三个主要因素。同时分析了夏收秋繁出苗障碍的生理原因，提出了提高秋繁出苗率的方法和主要技术指标：１．脱粒阴干，降低种子破裂率，保持种子１６．７％～１８．５％的含水量。２．适期播种，福州地区７月３０日前后５ｄ为播种危险期。３．先灌后播，田间持水量为５５％～５８％。

The present paper dealt with the barrier factors for emerging of the seedling of vegetable soybean.The results showed that methods of sundrying seeds,selection of sowing periods and water content of soil were main factors.The techniques of keeping the 16.7%-18.5%water con-tent of seed,sowing at the proper time of about July 30 in Fuzhou and keeping 55.0%-58.0% of soil water content were used to get the high emerging rate.