甘蔗是喜温喜光的Ｃ４作物，生长期长，生物量大，世界甘蔗主要分布在温光资源丰富的低纬度地区。湘北蔗区（Ｎ２９°Ｅ１１１°）属于世界北缘蔗区，温光资源相对不足，甘蔗有效生长期短，原料蔗产量低（亩产３．５ｔ左右）。为减轻冻害损失，在甘蔗工艺成熟度较低的情况... Sugar cane is a hi-temperature light C4 crops, long growth period, biomass, the world’s sugar cane are mainly distributed in the low temperature region rich in light and light resources. The northern Hunan sugarcane (N29 ° E111 °) belongs to the sugarcane field in the northern margin of the world, with relatively insufficient temperature and light resources, short effective growth period of sugarcane, and low yield of raw sugarcane (about 3.5t per mu). In order to reduce the loss of frost damage, in the case of lower sugar cane technology maturity ...