摘要
本文根据连续三年田间试验结果,从作物生产力形成角度,对比分析了旱地春小麦、豌豆、扁豆、莜麦、谷子、胡麻、马铃薯及苜蓿、草木樨、红豆草等十种作物的第一性生产力及资源的利用效率,在此基础上,着重探讨了它们在干物质积累动态、净同化率以及叶面积动态等方面的差异性,为深入研究提高旱地作物产量和生态适应性的途径提供了理论基础。
Based on the three years' field experiments and with a view of the formarion of crop productivity, this paper analysed the first productivity and efficency of resource utilization of 10 kinds of crop species, including spring wheat, pea, dolichos, milt, potato,naked-oat, crown-flax, lucerne sweet clover and sainfoin in Dingxi county of Gansu proviuce. On the basis of which, also, the paper deals with the differentiations in dry matter accumulation dynamics, net assimilation ratio and leaf area index of the ten crops so as to provide the theoretical basis for the crop yield and ecological adpatation in ratainfed lands.
出处
《干旱地区农业研究》
CSCD
北大核心
1989年第3期10-16,共7页
Agricultural Research in the Arid Areas
