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黑土地是大自然给予人类的得天独厚的宝藏,是一种性状好、肥力高,非常适合植物生长的土壤。近年来,由于自然因素制约和人为农事活动破坏,黑龙江省黑土地水土流失日益严重,生态环境日趋恶化。最新监测结果显示:黑龙江省不同程度水土流失耕地面积达460万公顷。研究表明,每生成1厘米厚黑土需要200年到400年时间,而现在黑土层却在以每年近1厘米的速度流失,每年流失掉的黑土总量达一到两亿立方米,光是跑掉的氮、磷、钾
Black land is nature’s unique treasure given to human beings, is a good trait, high fertility, very suitable for plant growth in soil. In recent years, due to the constraints of natural factors and the destruction of man-made agricultural activities, the water and soil loss in the black land in Heilongjiang Province has become increasingly serious and the ecological environment has deteriorated day by day. The latest monitoring results show that the area of soil and water loss in different degrees in Heilongjiang Province amounts to 4.6 million hectares. Studies show that it takes 200 to 400 years to produce 1 cm thick black soil. Now that the black soil is losing nearly 1 centimeter per year, the total amount of black soil lost every year reaches 200 million cubic meters, Out of nitrogen, phosphorus, potassium