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我县近几年调整了杂交水稻制种布局,利用山区制种的自然优势和生产优势发展商品种子生产,取得了很好的经济效益。一、山区制种技术 (一)安排最佳抽穗扬花期,实行避灾高产栽培。根据我县气象站22年的气温记载,彭市乡、州门司乡制种基地7月到8月上旬的气温虽适合扬花授粉,但并不都是理想的扬花期。临近立秋时常受规律性的‘秋半日’影响,阴雨天多,午后阵雨多,经常几天不能扬粉,灌浆、乳熟、黄熟阶段又受高温高湿影响,穗颈瘟易暴发成灾,穗上的籽粒也易发芽,严重影
In recent years, our county has adjusted the hybrid rice seed production layout and utilized the natural advantages and production advantages of mountain seed production to develop the production of commodity seeds and achieved good economic benefits. First, mountain seed production technology (A) arrange the best heading and flowering, the implementation of high-yielding cultivation. According to the meteorological station 22 years of temperature records, Peng Township, State Secretary Secretary seed production base in July to early August the temperature is suitable for pollination, but not all are the ideal flowering stage. Near the autumn often affected by the regular ’autumn half day’, more rainy days, afternoon showers and more, often a few days can not flour, grouting, milk cooked, yellow stage is affected by high temperature and humidity, panicle blast prone to disaster, Spike on the seeds are also prone to germination, severe shadow