极早熟菜用豌豆生长特性的研究崔崇士，董玉清，张凤荣（东北农业大学园艺系·哈尔滨）极早熟菜用豌豆是我国北方地区春夏交替季节的蔬菜，喜冷冻湿润气候，可作早春露地栽培。因其含有较多的根瘤，作为前茬作物．可使土壤含氮量增加，为后茬作物提供良好的土壤环境。目前... Study on Growth Characteristics of Very Early Maturity Pea Cui Chongshi, Dong Yuqing, Zhang Fengrong (Department of Horticulture, Northeast Agricultural University, Harbin) Pear is very early vegetables with vegetables in spring and summer alternating season in northern China, like frozen humid climate can be used for early spring open field cultivation . Because it contains more nodules, as the former crop. Can increase the nitrogen content of soil, provide a good soil environment for the following crop. Currently...