群馬県稲麦二毛作地帯における水稲育苗箱全量基肥栽培のプール育苗法に関する検討

日本作物学会紀事

高橋 行継²  吉田 智彦¹ 

[1] 宇都宮大学農学部;群馬県西部農業事務所

关键词: Controlled availability fertilizer;    肥効調節型肥料;    Covering with fused phosphate;    熔性燐肥覆土;    Double cropping;    二毛作;    Fertilization;    施肥;    Labor-saving;    育苗法;    Nursery box;    育苗箱;    Paddy rice;    水稲;    Pool raising;    プール育苗;   

DOI  :  10.1626/jcs.75.119

学科分类：农业科学（综合）

来源: Nihon Sakumotsu Gakkai / Crop Science Society of Japan

【 摘 要 】

We studied the method of raising paddy rice seedlings using the single whole basal fertilizer application to the nursery box in the rice-wheat double cropping area in Gunma Prefecture. The seedlings were raised by the pool method which is widely used in Gunma Prefecture. We applied single whole basal fertilizer named “Naebako-makase” (N400-100 and NK301-100) , and raised the seedlings for 20-22 days. From the studies for 3 years, we found that could be raised seedlings in April without any problems, but in May-June feritilizer tended to be dissolved excessively in the latter period, and the seedlings tended to show spindly growth, along with lower mat intensity. The type of fertilizer and the position of feritilizer in nursery boxes scarcely influenced seedling growth. The use of grained soil to cover the seeds did not affect the emergence and growth of seedlings. On the other hand, seedlings could hardly emerge when covered by grained-fused phosphate. Covering with powdering fused-phosphate caused growth injury and decreased the seedling-mat intensity. The small decrease of seedling mat intensity caused by covering with grained-soil was avoidable by increasing the sowing rate, and healty seedlings suitable for transplanting could be grown. Therefore, we found that this method can be introduced to the rice-wheat double cropping areas in Gunma Prefecture.

【 授权许可】

Unknown