在三江平原中的主要低产土壤之一是黑朽土,因受哑叭涝影响,面积和产量波动较大,现有耕地1139万亩,平均亩产仅192斤。涝年只有149.6斤,丰年亩产为321斤,丰欠年单产相差一倍以上。因此,研究采取有效的改良途径,确保高产、稳产,不仅对 One of the major low-yielding soils in the Sanjiang Plain is black-haired soils. Due to the impact of dumb-head floods, the area and output fluctuate greatly. The existing arable land covers an area of ​​11.39 million mu and the average yield per mu is only 192 kg. Waterlogging only 149.6 pounds, harvest mu 321 kg, owe yield more than doubled. Therefore, the study adopts an effective improvement approach to ensure high yield and stable yield, not only for it