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为了探讨超级早稻和晚稻的产量构成和氮磷钾吸收的基因型差异,2007年在湖南省衡阳市、益阳市和岳阳市进行了不同品种的大田栽培试验。结果表明地点间和品种间的产量差异显著,其中:地点间产量以岳阳点较高,平均产量早稻为7.95 t/hm2,晚稻为7.86 t/hm2;品种间产量早稻以陆两优996和中嘉早32最高,平均产量分别为8.03和7.91 t/hm2,晚稻以钱优1号和天优华占产量较高,产量分别达到7.69和7.55 t/hm2。成熟期植株NPK含量和吸收量的品种间差异显著,但与产量的高低不相关。单位产量(1 000 kg稻谷)的NPK养分需要量分别为15.0~18.9,3.29~5.17和13.6~16.49 kg。
In order to investigate the differences in the yield components and genotypic differences of N, P and K uptake between super and late rice, field trials were conducted in different fields in Hengyang, Yiyang and Yueyang in Hunan Province in 2007. The results showed that there was significant difference in yield between sites and among cultivars. Among them, the highest yield was Yueyang Point with the average yield of 7.95 t / hm2 for early rice and 7.86 t / hm2 for late rice; Jiazao 32 was the highest with the average yields of 8.03 and 7.91 t / hm2, respectively. The yield of late rice was higher with Qian You 1 and Tianyuhua, and the yields reached 7.69 and 7.55 t / hm2, respectively. The differences of NPK content and uptake of mature plants were significant but not related to the yield. NPK nutrient requirement per unit of production (1 000 kg paddy) was 15.0-18.9, 3.29-5.17, and 13.6-16.49 kg, respectively.