Abstract:

In order to have a further understanding between the basic seedlings and early rice yield, a field experiment was carried out to compare the influence of seedling number on yield and yield formation in early season of Hunan Province. 3 treatments with different seedling were: 2, 3, 4 seedlings per hole. 2 conventional rice varieties and 2 hybrid varieties with different tillering ability were chose. The yield and its components, biomass production and tiller number were observed. The results showed that, as the increase of basic seedlings number, productive panicles and total dry matter weight also increased, thus rice yield increased, while the number of grain per panicle, setting rate and harvest index decreased. The leaves spread slowly at higher basic seedlings number. Tiller number got the max and preformed significant difference at 28 days after transplanting, and then decreased slightly for all varieties and treatments. The results indicted that more seedling number per hole was benefit to get higher yield.