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冬小麦返青后,管理就应上马。中心环节是保证麦苗早发穗长。对不同类型的麦苗,也要有不同的对策。一、松土保墒管壮苗。对冬前单株分蘖多至5个、每亩总茎数在70-90万的壮苗,管理的重点是早春多锄深划,疏松土壤,增温保墒,促使根系深扎,并防止旺长。追肥浇水要推迟到起身期,华北中南部地区在三月中、下旬,北部地区在三月底至
After turning green winter wheat, management should be launched. The key link is to ensure early emergence of wheat spike length. Different types of wheat seedlings, but also have different countermeasures. First, soil moisture pipe strong seedlings. To winter before tillering up to five per plant, the total number of stalks per acre in the 70-90 million strong seedlings, management focus is early spring and more hoe deep draw, loose soil, warming soil moisture, to promote deep root bar and prevent Wang long. Topdress watering should be postponed until the onset period, central and southern parts of North China in mid-March, late, the northern region at the end of March to