| 华北寒旱区作物轮作的生产效应 |
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| 基金项目： | Special Fund for Agro-scientific Research in the Public Interest(201503120);Special Fund for Agro-scientific Research in the Public Interest(18227004D) |
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| 摘 要： |
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| 收稿时间： | 2020-03-18 |
Productivity evaluation of crop rotation in cold and arid region of Northern China |
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| Authors: | Zhao-Lei YAO Ji-Zong ZHANG Yu-Qiong DU Yu-Hua LIU Li-Feng ZHANG |
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| Institution: | 1.College of Agronomy, Hebei Agricultural University, Baoding 071000, Hebei, China;2.Zhangbei Agricultural Resource and Ecological Environment Key Field Research Station, Ministry of Agriculture and Rural Affairs, Zhangjiakou 076450, Hebei, China |
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| Abstract: | To understand mechanisms of crop adaptability to various previous crop croppings, evaluate crop performance on the croppings, and identify suitable crop combinations for rotation of major crops in the cold and arid region of Northern China. A five-year field experiment was conducted using five crops from 2015 to 2019, including potato (Solanum tuberosum), faba bean (Vicia faba), forage maize (Zea mays), oat (Avena sativa), and beet (Beta vulgarwas). Yields of potato, oat, and beet in rotation were 1.30-1.68, 1.28-1.48, and 1.25-1.48 times of those in continuous cropping of single crops, respectively. Yield of faba bean on beet cropping was 10.58% lower than that of continuous faba bean while yield of forage maize on oat or beet stubble was 9.10%-15.42% lower than that of continuous forage maize. The LERr of 10 crop combinations was 1.09-1.68, indicating positive effects of rotation. Combinations of oat → potato, beet → potato, forage maize → potato and faba bean → potato had higher LERr, indicating faba bean and forage maize might be more durable of continuous cropping. In terms of productivity, suitable crop combinations for rotation in the area were oat → potato, beet → potato, forage maize → potato, faba bean → potato and oat → beet. |
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| Keywords: | the cold and arid region of Northern China crop rotation land equivalent ratio |
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