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1.选择最佳的花期气候,安排好父母本播期、播差期山区扬花期的最佳气候条件是:日平均温度28～30℃,日照时数每天不少于4小时,无整日雨天。不避高温,只怕低温,每隔1～2日下一次雷阵雨增加空气湿度是最理想的。我县具备这样的气候条件时间在8月5日。迟熟组合协(汕)优63一期父本安排在4月20～23日播种,中熟组合汕优桂33一期父本安排在4月23～25日播种.早熟组合汕(协)优64一期父本安排在5月20日左右播种,间隔6～8天,一期父本叶龄1.5叶播种二期父本。父母本播差期以叶龄为依据,兼顾时差,两者统筹考虑。协(汕)优63:叶龄差9.2～9.4叶,时差不少于42天;汕优桂33:叶龄差8.9～9.1叶时,时差不少于40天;汕(协)优64:叶龄差4.3～4.5叶,时差不少于15天。
1. Select the best flowering climate, arrange the parental sowing date, sowing the best flowering period of mountain climatic conditions are: the average daily temperature of 28 ~ 30 ℃, sunshine hours every day for not less than 4 hours, no day rain. Not avoid the heat, I’m afraid low temperature, every 1 to 2 thunder thunderstorms to increase the air humidity is the best. My county has such a climatic condition on August 5. The combination of late maturity and combination (Shanyou) You 63 was first planted on April 20 ~ 23, and the maturity arrangement of Zhongyou Combination Shanyougui 33 was planted on April 23 ~ 25. Excellent 64 a paternal arrangement in the May 20 or so sowing, an interval of 6 to 8 days, a parent leaf age 1.5 leaf seeding stage two paternal. The parents of sowing age based on leaf age, taking into account the time difference, the two take into consideration. (Shanyou) excellent 63: leaf age difference of 9.2 to 9.4 leaves, the time difference of not less than 42 days; Shanyou Gui 33: leaf age difference of 8.9 to 9.1 leaves, the time difference of not less than 40 days; Leaf age difference 4.3 ~ 4.5 leaves, the time difference of not less than 15 days.