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去年,我们在广东省崖县藤桥公社藤桥大队第十生产队进行四优2号(即闽优1号)制种。114亩四优2号制种田,制种16800斤,平均亩产147.3斤,其中1.84亩制种高产试验田,共收干种609斤,平均亩产331斤。主要制种技术:一、花期安全巧相遇是制种高产的关键花期巧相遇,是杂交水稻制种成败的关键所在。因此,如何安排父母本花期在适宜的气候条件下同时开花,避过高温或低温,是获得制种高产的一项根本技术措施。据省农科院稻麦所杂优组观察测定,V_(41)A×1R_(24)组合抽穗扬花期的温度在25～30℃,异交率最高,日最高温度大于35℃,或日最低温度小于20℃,异交率则不高。我们查阅了南田农场有关藤桥地区
Last year, we planted the seed of Siyou No.2 (ie Minyou No.1) in the tenth production team of Tengqiao Brigade in Tengqiao County, Guangdong Province. 114 acres of Siyou 2 system of farming, planting 16800 pounds, the average yield 147.3 pounds, of which 1.84 acres of high yielding test field of cultivated, received a total of 609 kg of dry species, the average yield of 331 pounds. The main seed production techniques: First, flowering coincidental safety coincidence is the key to flowering seed production coincidence, is the key to the success of hybrid rice seed production. Therefore, how to arrange the flowering of parents in the appropriate climatic conditions at the same time flowering, to avoid high temperature or low temperature, is to obtain a high yield of seed production is a fundamental technical measure. According to the observation and determination of the hybrid rice and wheat of Gansu Provincial Academy of Agricultural Sciences, the temperature of flowering and flowering of V_ (41) A × 1R_ (24) combinations was 25 ~ 30 ℃, the highest outgrowth rate was at daytime, the maximum daily temperature was above 35 ℃, The minimum temperature is less than 20 ℃, out of rate is not high. We looked at Nantian Farm about the Fujita area