论文部分内容阅读
为了探索加速新品种选育的途径,缩短小麦育种年限,我院1970—72年在马尔康和72年在昆明地区,进行了小麦夏播繁殖。现将两地试种情况简报如下:马尔康地处我省西北高原,海拔2600公尺,年平均温度8.6℃,7月分最热月平均16.7℃,最冷月1月分平均-1.0℃左右,常年10月气温急骤下降,月平均8.8℃,最高25.8℃,最低-6.2℃。一般初霜期在10月中旬,末霜期在5月下旬,无霜期94天。年雨量735.6mm,主要分布在5—9月,日照时间较长,日照强度较大,气候干燥。小麦夏播生育阶段5—9月平均气温14.8℃,最高33.0℃,最低2.4℃,昼夜温差大,雨水充足。
In order to explore ways to speed up the breeding of new varieties and shorten the breeding period of wheat, the summer sowing of summer wheat was carried out in Malcolm in 1970-72 and Kunming in 72 years. Brief introduction of the trial planting situation of the two places is as follows: Malcolm is located in the northwestern plateau of our province at an altitude of 2600 meters with an average annual temperature of 8.6 ℃. The hottest month in July is 16.7 ℃ on average, and the coldest month in January is -1.0 ℃ on average , Perennial temperatures dropped sharply in October, the average monthly 8.8 ℃, the highest 25.8 ℃, the lowest -6.2 ℃. The general first frost period in mid-October, end frost period in late May, frost-free period of 94 days. Annual rainfall 735.6mm, mainly in the May-September, a longer sunshine, sunshine intensity, dry climate. During the summer sowing period of wheat, the average temperature of May-September is 14.8 ℃, the highest is 33.0 ℃ and the lowest is 2.4 ℃. The temperature difference between day and night is large and the rainfall is sufficient.