Effects of three-dimensional climate on rice varieties in the low altitude areas of Eastern Guizhou Province
In order to explore the planting performance of different rice varieties under different microclimate conditions in the low altitude areas of Eastern Guizhou Province,51 rice varieties including Chuanguyou 1378 were selected to conduct display experiments in Tangtou base in the west and Bahuang base in the east of Tongren City,Guizhou Province.The growth period,planting performance,and yield indicators of each rice variety were analyzed.The results showed that microclimate differences had an impact on rice planting performance and yield,and the changes in growth period were influenced by the three-dimensional climate of the planting area and related to variety adaptability;There were differences in planting performance such as plant height and panicle length among different rice varieties,among which the seed setting rate was lower in the western base than in the eastern base.The measured yield of 43 exhibited varieties in the western base was higher than that in the eastern base,with an increase of 9.0-7 047.0 kg/hm2.The yield of 7 varieties planted in the western base was lower than that in the eastern base,with a decrease of 60.0-3 979.5 kg/hm2.Based on the performance of various varieties in terms of growth period,agronomic traits,and yield,it was selected that Jiuyou 27 Zhan,Yixiangyou 800,and Zhongjiuyou 2 were suitable for promoting planting in the low altitude western region of Eastern Guizhou Province,Jingliangyou 1206,Jingyou 312,Weiliangyouyuzhan,and Aofuyou 287 were suitable for promoting planting in the low altitude eastern region of Eastern Guizhou Province.
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