Cultivation of Late-Planted Soybean with Narrow-Row and Dense-Sowing using Chisel Plow and Grain Drill to Manage Reclaimed Farmland Damaged by the Tsunami after The Great East Japan Earthquake in Miyagi Prefecture

日本作物学会紀事

Hisanobu Hayashi^11¹  Toshinori Matsunami^1²  Mari Namikawa^10³  Yoshisada Nagasaka^12⁴  Hidefumi Saito^2⁵  Ryuji Otani^3⁶  Hiroyuki Sekiya^4⁷  Yoshiya Shinoto^5⁸  Hideaki Kanmuri^6⁹  Soichi Nakayama^7^1,10  Mizuhiko Nishida^8^1,11  Tomoki Takahashi^9^1,12  Katsuyuki Katayama^13^1,13 

[1] Institute of Agricultural Machinery, NARO^11;Tohoku Agricultural Research Center, NARO^1;Tohoku Agricultural Research Center, NARO^10;Tohoku Agricultural Research Center, NARO^12;Tohoku Agricultural Research Center, NARO^2;Tohoku Agricultural Research Center, NARO^3;Tohoku Agricultural Research Center, NARO^4;Tohoku Agricultural Research Center, NARO^5;Tohoku Agricultural Research Center, NARO^6;Tohoku Agricultural Research Center, NARO^7;Tohoku Agricultural Research Center, NARO^8;Tohoku Agricultural Research Center, NARO^9;Western Region Agricultural Research Center, NARO^13

关键词: Chisel Plow;    Crop Rotation in Paddy Field;    Dense-sowing;    Grain Drill;    Large-sized Field;    Late-planted;    Narrow-row;    Soybean;   

DOI  :  10.1626/jcs.86.192

学科分类：农业科学（综合）

来源: Nihon Sakumotsu Gakkai / Crop Science Society of Japan

【 摘 要 】

The number of farmers abandoning reclaimed farmland damaged by the tsunami following the Great East Japan earthquake has rapidly increased, and the few remaining farmers must manage substantial areas of reclaimed farmland by large scale farming. To develop a labor-saving cultivation technique to manage these fields, we investigated the suitability of two varieties of late-planted soybean, and appropriate row spacing, using a crop rotation system of rice–wheat–soybean every two years. Varieties “Akimiyabi”, a medium-maturing variety newly released in the Tōhoku Region; and “Tanrei”, an established, recommended variety were used. “Akimiyabi” had shorter and thicker stems than “Tanrei”, when planted in more narrow rows and high density. In addition, green stem disorder was reduced and harvest time was earlier in “Akimiyabi” than in “Tanrei”. The growth volume and yield were larger in “Akimiyabi” than in “Tanrei”. Seed protein content, inspection grade and seed size, were not influenced by row spacing within 24 cm to 36 cm, whereas the lodging in 24 cm row spacing was less than that in 36 cm row spacing. Our results suggest that “Akimiyabi” late planted at a high density with a row spacing of 24 cm is appropriate to obtain a stable high yield.

【 授权许可】

CC BY