Characteristics and high-yield seed production techniques of the fragrant hybrid indica rice variety Quanxiangyou 89
The characteristics,suitable planting areas,cultivation techniques,and high-yield seed production techniques of Quanxiangyou 89 were summarized and analyzed based on its production practice.This variety is planted in the upper,middle,and lower reaches of the Yangtze River and exhibits characteristics such as suitable growth period,excellent rice quality,and high-yield;it is suitable for planting in areas with low incidence of rice blast disease,such as Pingba hilly rice growing areas in Sichuan Province and mid to low altitude indica rice growing areas in Yunnan Province.The high-yield cultivation techniques include early sowing in time and cultivating multi-tiller seedling;heavy application of bottom fertilizer,timely topdressing;dry and wet alternate pipe water and timely pest control.High-yield seed production techniques include post tobacco seed production in areas with an altitude of 250-500 meters;according to the different seed production seasons,ensure that the parental sowing difference period is between 6.5 and 7.5 leaves;soaking seeds with pesticides,spraying paclobutrazol,etc.,to promote the health,dwarfism,and multiple tillering of seedlings;arranging a parent to parent ratio of 1∶8;managing fertilizer and water according to the growth of seedlings in the field;timely prevention and control of diseases and pests such as neck blight and rice planthopper based on actual field investigations and local pest and disease reports;adopting the method of young ear peeling to predict flowering period,it is advisable to use the same period as the parents in the early stage of young ear differentiation;spraying gibberellin when the panicle reaches 15%;pay attention to removing impurities and maintaining purity throughout the entire seed production process;harvesting begins when 75%of the seeds are ripe and dried promptly after harvesting.This article provides references for the demonstration and promotion of high-yield seed production techniques for Quanxiangyou 89.
hybrid riceQuanxiangyou 89variety selection and breedinghigh-yield seed production
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