Comparison of the Yield of Direct-sowed Paddy Rice and Conventionally Transplanted Paddy Rice Cultivated Using

Japanese Journal of Crop Science

Chihomi KASAI¹  Naoki ENDO¹  Mitsuo IMURA¹ 

关键词: Azolla;    アゾラ;    Chinese milk vetch;    収量性;    Conventional transplanting culture or paddy rice;    水稲慣行移植栽培;    Direct sowing of paddy rice into puddled and leveled soil;    水稲湛水土中散播栽培;    Yielding ability;    レンゲ;   

DOI  :  10.1626/jcs.68.364

学科分类：农业科学（综合）

来源: Nihon Sakumotsu Gakkai / Crop Science Society of Japan

【 摘 要 】

A field trial was conducted to establish an economic and environment-conservative rice culture. The yields of the direct-sowed paddy rice cultivated using Chinese milk vetch (Astragalus sinicus L.) as green manure and conventionally transplanted paddy rice cultivated using Chinese milk vetch or azolla (Azolla imbricata (Roxb.) Nakai) were compared with those cultivated using chemical fertilizers. The length of the period from plowing of Chinese milk vetch under the soil to the beginning of irrigation and puddling did not affect any yielding characters in either culture. The yield in the plot with Chinese milk vetch was about 30% lower than that in the plot with chemical fertilizers in the direct-sowed rice and about 10% lower in the conventionally transplanted rice. In this study, azolla did not increase rice yield, and further studies are needed to determine the effective method for application of azolla onto the rice field.

【 授权许可】

Unknown