一 地区特点和生产问题 龙江、甘南两县与齐齐哈尔市是黑龙江省西部干旱地区的一部分。这个区域内的土壤,以石灰性黑土、砂石土及砂质黑黄土为主。这几种土壤含有机质少,保水力差,易受干旱威胁,不利于播种保苗。以齐齐哈尔市全合台的石灰性黑土为例(嫩江农业科 A Regional Characteristics and Production Issues Longjiang and Gannan Counties and Qiqihar City are part of arid areas in western Heilongjiang Province. The soil in this area is dominated by calcareous black earth, sandy soil and sandy black loess. These types of soil less organic matter, poor water retention, vulnerable to drought threat is not conducive to sowing seedlings. Take Qiqihar City, all of Taiwan’s calcareous black soil as an example (Nenjiang Department of Agriculture