论文部分内容阅读
针对宁南半干旱区一熟有余、两熟不足的气候条件 ,在灌溉农田开展了以间作套种为主的高效多熟种植模式试验研究。结果表明 ,采取立体复合种植 ,能够有效提高农田第一性生产力和土地利用率 ,增进光、热、水等农业资源的利用效率 ,增加农业系统能量产出 ,提高单位面积经济收入。运用灰色关联分析法对 5种间作套种模式和 2种单作模式的生产效益综合评价结果 ,各种植模式的综合效益排序依次为 :马铃薯‖玉米>小麦 /玉米 >豌豆 /玉米 >胡麻 /甜菜 >玉米单作 >豌豆 /向日葵 >小麦单作。此外 ,还对不同种植模式的合理运用作了讨论
Aiming at the climatic conditions of the semi-arid zone in southern Ningxia that have more than one crop and two crops lack of ripening, the pilot study on high-efficiency and multi-cropping mode with intercropping as main intercropping is carried out in irrigated farmland. The results showed that the three-dimensional compound planting could effectively improve the primary productivity and land utilization efficiency of farmland, increase the utilization efficiency of agricultural resources such as light, heat and water, increase the energy output of agricultural system and increase the economic income per unit area. The results of comprehensive evaluation of production efficiency of five intercropping patterns and two monocropping patterns by gray relational analysis were as follows: potato ‖ corn> wheat / corn> pea / corn> flax / beet> Single crop of corn> pea / sunflower> Single crop of wheat. In addition, the rational use of different planting modes was discussed