【摘要】 谷子氮（Ｎ）、磷（Ｐ２Ｏ５）二因素，三水平正交回归设计试验得出：在豫西旱地谷子生产中，增施氮、磷可以增加谷子产量。不同产量水平条件下其增产模式分别为：高产田（亩产＞２００ｋｇ）ｙ＾＝２１９．０５＋１３．６９Ｎ＋１７．８９Ｐ－１．１２Ｎ２－２．０３ｐ２－０．１７ＮＰ；低产田（亩产＜２００ｋｇ）ｙ＾＝１６６．６５＋１２．９０Ｎ＋１５．８２ｐ－０．７２Ｎ２－１．３１ｐ２－０．７７ＮＰ。氮、磷两种元素的最佳配比在高产田为１．３：１，低产田为１．４：１。干旱地区培养土壤肥力是实现高产的重要因素之一。更多还原

【Abstract】 Orthogonal regression design with two factors of N and P2O5 applied tomillet with two levels was conducted to obtain that the increased application of N and Pfertilizer was able to increase millet yields in the rainfed land in the west part of HenanProvince. In the Case of different yield increasing models , its yield increasing modelsshould be over 200 kg/mu for high-yielding land =y219.05+13.69N+17.69p 1.12N2 2.03p2 0.17NP and less than 200kg for the low-yielding land y=166.65+12.90N + 15.82p 0.72N2 1.31p2 77NP respectively. Also, the optimal matchingrate between N and P element should be 3:1 for the high-yielding land and 1.4:1 forthe lowyielding land. Accordingly, bettering soil fertility is one of the important factorsto achieve high yields in the arid areas.更多还原