华北寒旱区作物轮作的生产效应

姚兆磊, 张继宗, 杜玉琼, 刘玉华, 张立峰

Productivity evaluation of crop rotation in cold and arid region of Northern China

Zhao-Lei YAO, Ji-Zong ZHANG, Yu-Qiong DU, Yu-Hua LIU, Li-Feng ZHANG

表2 试验作物播种期与收获期

Table 2 Sowing and harvesting dates of experimental crops

作物 Crop 播种与收获日期 Sowing and harvesting date (month/day) 2015 2016 2017 2018 2019 播种 Sowing date 收获 Harvesting date 播种 Sowing date 收获 Harvesting date 播种 Sowing date 收获 Harvesting date 播种 Sowing date 收获 Harvesting date 播种 Sowing date 收获 Harvesting date 马铃薯Potato 04/30 09/18 05/02 08/25 04/25 09/16 04/28 09/12 05/03 09/17 蚕豆Faba bean 05/04 08/21 05/04 08/24 05/19 08/26 05/15 09/09 05/14 09/16 饲用玉米Forage maize 05/26 09/20 05/22 08/26 05/19 09/11 05/15 09/15 05/14 09/21 莜麦Oat 05/31 09/16 05/21 09/03 05/25 09/08 05/23 09/01 05/23 09/18 甜菜Beet 05/23 10/07 05/25 10/01 05/27 10/01 05/29 10/03 05/20 09/28