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一、我县水稻品种现状及引种辐汕品系的意义。苍溪县地处川北深丘地带,农业生产立体气候生态特征明显。水稻种植方式是稻麦两熟和冬水田一季中稻,常年栽插面积30万亩左右,其中杂交稻(以“汕优2号”为主)10万亩,常规稻以桂朝面积最大约7万亩,单产量也居首位。但桂朝系品种适口性太差,稻(麦曲)病严重,种性日渐衰退,生产上急需换代品种出世。
First, the current status of rice varieties in our county and the significance of introduction of the Shanshan strains. Cangxi County is located in the northern area of northern Sichuan hills, agricultural production of three-dimensional climatic and ecological characteristics are obvious. The rice planting mode is the double crop of rice and wheat and the first season mid-season paddy of winter paddy field. The annual planting area is about 300,000 mu, of which 100000 mu is the hybrid rice (mainly “Shanyou 2”), and the conventional rice is about 7 Mu, yield also ranked first. However, the varieties of the Gui-Chai palatability is too poor, rice (Ma song) is a serious disease, the declining species, the urgent need for the birth of new varieties of production.