白浆土改良盆栽试验报告

1982—1985年,在白浆土的白浆层添加不同的改良物料并种植不同的作物(小麦、大豆、玉米)进行盆栽试验,其结果是不同的改良物料其效果不同,同一改土物料对不同作物的影响也不同。氮磷肥配合施用,可以显著提高白浆层土壤的生产力;对小麦、大豆来说,有机物料和氮磷肥表现出较好的联因效应,玉米施氮磷肥就表现出显著效果,但添加有机物料,反而使产量下降。加粘土调节白浆层土的机械组成,再配合施氮磷肥,有很好的增产效果,优于单施氮磷肥的处理。施用石灰,对大豆有良好的增产作用。麦秸还田必须配合施用氮磷肥。有机物料相比,腐殖土优于草炭,草炭优于麦秸。

THE REPORT ON POT EXPERIMENT OF IMPROVEMENT OF PLANOSOLS

The planosol is a low-yield soil. The pot experiments were conducted with the albic soil of planosol added different materials improved for wheat, sybean and corn during 1982-1985. The results show that the different materials improvedhave different effects and vary on crops.The productivity of albic soil could be increased by fertilizer N and P significantly. The organic materials with fertilizer N and P show better interacted effect for wheat and soybean. However, the significant effect was observed by fertilizer N and P without organic materials for corn, otherwise yield was decreased. Adding the clay soils in albic soils changed the soil texture and compound with fertilizer N and P has good results and better than the fertilizer only. The yield of soybean was increased by lime application, but not wheat and corn. Turn over wheat straw into albic soil must be compound with fertilizer N and P,otherwise no effects. Comparing the organic materials, the humic soil is better than peat, the peat is better than wheat straw.