论文部分内容阅读
对洛旱6号小麦的幼穗分化、籽粒灌浆和分蘖成穗三大生育规律进行了研究。结果表明,随着播期的推迟,洛旱6号幼穗分化的总时间缩短,二棱期经历的时间先增加后减少,10月4日播种和10月24日播种分别比10月14日播种缩短了4 d和18 d。洛旱6号的自我调节能力较强,平均灌浆速率在1.553~1.806 g/(d.1 000粒)之间。在10月4日播种情况下平均灌浆速率和最大灌浆速率较大,灌浆时间35~38 d,千粒重稳定在46 g以上。针对灌浆速率而言,以10月上旬播种对洛旱6号最为有利。洛旱6号主要依靠主茎和第1个和第2个一级分蘖成穗,随着播期的推迟,总分蘖数和成穗数逐渐减少。因此,洛旱6号适宜早播,最佳播种期为10月4—14日。
Studied on the law of spike differentiation, grain filling and tillering into spike of three varieties of No.6 wheat in No.6 drought. The results showed that with the delay of sowing date, the total time of spike differentiation of Luohan 6 was shortened, the duration of two-ridge period increased first and then decreased, the sowing on October 4 and sowing on October 24 were longer than those on October 14 Seeding shortened 4 d and 18 d. Luohan 6 self-regulation ability is strong, the average filling rate of 1.553 ~ 1.806 g / (d.1000) between. The average grain filling rate and the maximum grain filling rate were large when planted on October 4, with grain filling time of 35-38 days and grain weight of more than 46 g. In terms of grain filling rate, sowing in early October was most favorable to Luohan 6. Luohan 6 mainly relies on the main stem and the first and second tillers become the ear, with the delay of sowing date, the total number of tillers and the number of spikes gradually decreased. Therefore, Luohan 6 is suitable for early sowing, the best sowing date is October 4-14.