关键词: 打顶, 烤烟, 萘乙酸, K素

Abstract: An investigation was conducted on the breeding Fulica atra population in Anbanghe Nature Reserve and Longfeng wetland of Heilongjiang Province from April to September, 2008 and 2009. The F. atra in breeding season built three kinds of nest structures, i.e., display platform, egg nest, and brood nest. Both the female and the male participated in the construction of these structures, and protected their territory. The nest height and depth increased with clutch size, but the nest diameter didn’t. The clutch size decreased with the delay of breeding time, with a mean value of 8.77±0.24 (n=75). Both the female and the male made incubation, and the female consumed more time in each incubation event. The female and the male nursed the nestlings together, and some of the young birds were fed by their parents until at sub-adult stage. F. atra was omnivorous. The food list was mainly made up of vegetations, but also contained some animals.

Key words: Decapitation, Flue cured tobacco, NAA, Potassium