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New Rice Variety--Yuexiangzhan
Variety source: Yue Xiangzhan is a breeding and disease breeding research institute of the Rice Research Institute of the Guangdong Academy of Agricultural Sciences using the San Er dwarf/Xiangxiang account as a female parent, and Zongyou/Guangxi aromatic rice as a male parent through compound hybridization and reared in late 1995. Early in middle and middle maturity conventional high-quality rice varieties. In 1998, it passed the certification of crop varieties in Guangdong Province and in 2000 it passed the certification of national crop varieties. In 2001, it was included in the guidelines for the establishment of the 2001-2002 harvest plan of the Ministry of Agriculture; in 2001, it was awarded the first prize of Guangdong Province for scientific and technological progress. Main features: 1. Agronomic traits. The plant height is about 90cm, the leaves are narrow and thick, and the plant type distribution is moderate. The population has strong ventilation and light transmission, and the ear ends are degraded. The number of spikes is uniform and the number of grains per panicle is about 140. The seed setting rate is usually about 90%, and the grain weight is 19 grams. In Guangzhou, the early growth period is 125 days and the late season is 110 days. 2. The harvest index reached more than 0.60, which is about 20% higher than the current general variety, and has reached the index of the international rice plant's future super rice harvest index of 0.60. 3. High production, stable production and wide adaptability. From 1996 to 1997, they participated in the early-season high-quality rice regional trials in Guangdong Province, and their output ranked first. The average yield per mu was 441 kg, which represented an increase of 13.61% over the control species Qisan Mountain, reaching a very significant value. From 1997 to 1998, they took part in the regional trials of the South China Group in the southern rice region. In the two years, the output was ranked first in conventional rice, with an average yield of 440.12 kg per mu, which was 15.74% higher than that of the conventional rice variety Qiqishan, which was better than that of the hybrid rice. Gui 99 increased 12.55%, reaching a very significant level. In the comparison test of middle rice in Yuanmou County, Chuxiong Prefecture, Yunnan Province in 1998, Yuexiang accounted for 839kg per mu, which was 26.17kg higher than that of the large-grained Gugui Chao No. 2 at 13 days of ripening. Large-area application generally yields 450 kilograms per mu, and the high yield can reach 600 kilograms. 4. Disease resistance and strong resistance. Resistance to Bacterial blight and N. lugens in the mid-bacterial stage was 41.50% in the whole population of the rice blast fungus, which was strong in the field, and resistant to bacterial leaf streak and aphid, and resistant to lodging. better.