论文部分内容阅读
去冬今春,我们就不同小麦品种越冬期间忍耐低温的程度进行了试验。参加试验的品种有新冬2、3、5、6、7、9号,阿乌(1),1740,68(1)A/3347,70B/4—7,71(5)A/9,70C/3—7,泰山一号,黑杂6号,新乌克兰83等15个。各品种九月十五日播种,九月二十四日出苗,冬前麦苗生长良好,分蘖3—4个,十一月八日浇了越冬水。越冬期间曾出现三次最冷天气,第一次在十二月二十四日至元月六日,地表温度连续14天降到零下20.5—30.9℃,第二次在元月十八日至二十四日,地表温度连续5天降到零下21.7—32.5℃,第三次出现在元月二十六
In winter and spring, we tested the tolerance of different wheat varieties to bear the cold during winter. The varieties tested were Xin Dong 2, 3, 5, 6, 7, 9, A Wu (1), 1740,68 (1) A / 3347,70B / 4-7,71 (5) A / 70C / 3-7, Taishan One, Black Hybrid 6, New Ukraine 83 and other 15. Seeds were sown on September 15 and sprouted on September 24. The wheat seedlings grew well before winter, with tillers 3-4. The overwintering water was poured on November 8. During the winter months, the coldest weather occurred three times. For the first time, the surface temperature dropped to 20.5-30.9 ° C for a continuous period of 14 days from December 24 to January 6. The second time was between January 18 and January 2 On the 14th, the surface temperature dropped to 21.7-32.5 ℃ below zero for five consecutive days, the third one appeared on January 26