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我社大部分是旱地小麦,种植弱冬性品种。小麦入冬的壮苗指标是:叶龄5叶1心到6叶1心,3个左右分孽,4-6条次生根,最大叶片长13厘米,叶色青绿,分蘖茁壮,主茎蘖与一级分蘖长势均衡,蘖节粗壮,含糖量丰富,入冬碾耱后,分蘖节在地面以下6厘米左右深处,地下茎长度0.5-2.5厘米,单株鲜重1-1.5克,叶鞘长度大于3厘米。从群体构成上看,基本苗15-18万,入冬总茎数50万左右,叶面积指数0.8-0.9。根据这一要求,如何掌握播期和播种量呢?
Most of our clubs are dryland wheat, planting weak winter varieties. Winter wheat seedling indicators are: leaf age 5 leaves 1 heart to 6 leaves 1 heart, about 3 divisions, 4-6 secondary roots, the largest leaf length of 13 cm, leaf green color, robust stalks, main stem tiller With a balanced tiller growth, stout thick stems, rich in sugar content, winter milling, the tillering knot in the ground about 6 cm deep, underground stem length 0.5-2.5 cm, fresh weight per plant 1-1.5 grams, leaf sheath Length of more than 3 cm. From the group point of view, the basic seedlings 15-18 million, total winter stems around 500,000, leaf area index 0.8-0.9. According to this requirement, how to grasp the sowing and sowing quantity?