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本文系研究春小麦在氮、磷、钾三要素的不同组合和不同土壤水分条件下的生理反应及其对作物产量构成的影响,为黄土高原半干旱区合理施用化肥提供科学依据。材料和方法试验地点:设在陕西武功西北水保所干旱棚中。供试土壤:从固原取浅黑垆土,养分含量如表1。每盆装土:9.26公斤干土。施肥量:N=54mg/kg土,P_2O_5=7mg/kg土,K_2O=mg/kg土。肥料一次施入与土拌匀而后装盆。组合处理分:NPK、NP、NK、PK 和不施肥的 CK。八次重复分为两大组:正常供水的三次重复,干旱处理的五次重复(其中两次重复用于分析测定),作为收获考种材料的共六次重复。供试作物为固原推广的“红芒麦”。
In this paper, the physiological responses of spring wheat under different combinations of nitrogen, phosphorus and potassium and different soil moisture conditions and their effects on crop yield were studied to provide a scientific basis for the rational application of chemical fertilizers in the semi-arid region of the Loess Plateau. Materials and Methods Test Site: Located in the dry shelter of the Northwest Water and Soil Conservation Station of Wugong, Shaanxi Province. Test soil: from Guyuan to light black soil, nutrient content in Table 1. Each pot of soil: 9.26 kg dry soil. Fertilizer: N = 54mg / kg soil, P_2O_5 = 7mg / kg soil, K_2O = mg / kg soil. Once applied to fertilize the soil and mix well before loading basin. Combination treatment points: NPK, NP, NK, PK and no fertilization CK. Eight replicates were divided into two groups: three replicates of normal water supply, five replicates of drought treatment (two of which were repeated for analytical determination) as a total of six replicates of harvest material. The trial crops for the promotion of Guyuan “Hong Mangmai.”