半干旱地区创造高产品种的途径是在当地条件下积累有益的基因,选育抗干旱品种。在这方面,目前世界上已有一些研究资料。加拿大的 Pegmun 实验站,将两个对干旱适应性良好的小麦品种进行杂交,获得了一些比对照种增产百分之二十三至三十九的品系。 The way to create high-yielding varieties in semi-arid areas is to accumulate beneficial genes under local conditions and to breed drought-resistant varieties. In this regard, there are some research materials in the world. At Pegmun’s station in Canada, two wheat varieties with good drought adaptability were crossed to obtain some lines that increased yields by 23% to 39% over the control.