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枣庄市2002年秋播小麦面积8.4万hm~2,经过了严重的干旱少雨和暖冬后,2002年12月部分地块发现了小麦主茎拔节现象,我们组织科技人员进行了田间调查。 1 调查情况重点调查了小麦拔节发生面积较大的地块,每块地调查5个点,对角线取点。调查内容包括品种、播期、播量、地力水平、地块周围环境、拔节茎数等。据调查不同地块拔节茎数,加权平均2%以下的地块占发生面积的30%,2%～5%的地块占发生面积的50%,5%～10%的地块占发生面积的15%,10%以上的地块占发生面积的5%。
Zaozhuang City in autumn 2002 broadcast wheat area of 84000 hm ~ 2, after a severe drought, less rain and warm winter, in December 2002 found in some plots of wheat main stem jointing phenomenon, we organized scientific and technical personnel conducted a field survey. A survey of the survey focused on the emergence of wheat jointing larger plots, each plot to investigate 5 points, diagonal points. The survey includes varieties, sowing date, seeding rate, geotechnical level, plots surrounding environment, the number of stems and other joints. According to the survey plots in different plots of stems, the weighted average of less than 2% of the plots accounted for 30% of the area, 2% to 5% of the area accounted for 50% of the area, 5% to 10% of the area Of the 15%, 10% of the land area accounted for 5% of the area.