土壤肥力长期定位试验研究初报

１９８７～１９９７年的土壤肥力长期定位试验结果表明：空白区的产量更能反映耕地基础地力的高低；在目前的施肥水平下，氮、磷、钾配合施用能增加土壤有机质、全氮和碱解氮的含量；增施氮、钾肥能显著增加水稻产量。监测点较好地反映了广东省目前的农业生产状况，对农业生产具有一定的指导意义。

A Preliminary Report on Long-term Stationary Experiment on Soil Fertility

3 long-term stationary experiments have been conducted in Guangdong province since 1987. Results show that underthe conditions of the similar crop species and climate, the yield of the plots without applying fertilizer reflects soilnutrient supply much better than that with applying fertilizer. With the current fertiliation patterns, the application of N,P and K in combination can increase the organic matter, total N and alkali-hydrolysable N in soil. Increasing theapplication of N and K fertilizer can raise the yield of rice.