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将河西十五种主要种植形式连续三年定点定位试验,系统测定叶面积系数、干物质、截光率和漏光率,计算其群体生长率,净同化率、光热利用率,详细研究各自的灌水量、施肥量、用工量及投资费用,评价其经济效果;据生长动态、光热利用、经济效益、能量产投比等综合权衡不同种植形式的优劣和生态适立性。为制订合理的种植制度方案提供科学依据。
Fifteen kinds of main planting forms in Hexi were fixed for three years in a row, and the leaf area coefficient, dry matter, cut-off rate and light leakage rate were determined systematically. The population growth rate, net assimilation rate and solar thermal utilization rate were calculated. Irrigation amount, fertilizer amount, labor cost and investment cost, evaluate its economic effect; according to the growth dynamics, light and heat utilization, economic benefits, energy production ratio and other comprehensive trade-offs of the advantages and disadvantages of different planting forms and ecological adaptability. Provide a scientific basis for formulating a reasonable planting system plan.