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为研究光合生产与矿质营养的双层源库关系，设计了窄密沟与平作两种土壤环境，无Ｎ、１５０ｋｇＮ／ｈｍ２、２２５ｋｇＮ／ｈｍ２三个Ｎ肥水平的处理，研究了光合生产、矿质营养和两者的双层源库关系。结果表明：根系发育与分布在双层源库间起着承上启下的作用。土壤水分环境改善可同步促进根系发育和下伸、土壤Ｎ矿化和植株Ｎ吸收。植株吸收Ｎ能力的增强，使施Ｎ吸收效率提高；但要提高施用Ｎ的产量效率，还需提高吸收Ｎ的利用效率。为此，改善地上部群体配置，对光合生产与矿质营养的双层源库关系协调发展有重要意义。
In order to study the relationship between photosynthetic production and mineral nutrition in two layers of source and sink, two kinds of soil environments were designed, including N, 150kgN / hm2 and 225kgN / hm2 N fertilizer levels. The effects of photosynthesis, Nutrition and the relationship between the two sources. The results showed that the development and distribution of root system played an important role in the double source storehouse. Soil water environment improvement can simultaneously promote root development and elongation, soil N mineralization and plant N uptake. N absorption capacity of plants increased, so that N absorption efficiency increased; but to improve the yield of N application efficiency, but also need to improve the efficiency of N absorption. Therefore, improving the allocation of above-ground part groups is of great significance to the coordinated development of the double source and sink relations between photosynthetic production and mineral nutrition.