关键词: 小麦, 漯麦76, 千粒重, 灌浆特性, 产量, Logistic方程

Abstract:

In order to clarify the grain filling characteristics of the new wheat variety Luomai 76 and provide a basis for the high-yield cultivation of this wheat variety, Luomai 76 and the control varieties Zhengmai 113 and Yanzhan 4110 were used as test materials, and the Logistic equation was used to fit the grain filling process, and the correlation between grain filling parameters and 1 000-grain weight was analyzed. Through the variety test data of Henan Province, the effects of the three factors on the yield of Luomai 76 were analyzed. The results showed that the 1 000-grain weight of the three varieties increased in an “S” shape, and the 1 000-grain weight of Luomai 76 reached 56.25 g, the maximum grain filling rate was 2.42 g·d^-1, and the average grain filling rate was 1.37 g·d^-1, all of which were better than those of the control varieties. The 1 000-grain weight, the number of spikes and the number of grains per spike had different effects on the increase of yield of Luomai 76, and the total effect showed as 1 000-grain weight>number of spikes>number of grains per spike. Therefore, in production practice, in addition to ensuring the effective number of spikes, it is also necessary to pay attention to stabilizing the number of grains per spike, taking measures to strengthen the management of water and fertilizer during the grain filling stage, and increasing the 1 000-grain weight, and futher achieve the coordinated improvement of the three factors, and futher achieve the high yield goal of Luomai 76.

Key words: wheat, Luomai 76, 1 000-grain weight, grain filling characteristics, yield, Logistic equation