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小麦适宜播种期和适宜播种量的确定以及冬前苗期管理是小麦高产栽培技术中的重要环节。在惠民地区(目前主要推广品种是济南13号和辐63)农业部门认为冬前壮苗的标准一般为主茎生长5—7片叶,单株分蘖3—5个,总茎数在70—90万/亩。通过对小麦分蘖过程的实验观察,研究了叶龄,分蘖数与积温的关系。小麦分蘖与积温的函数关
The proper sowing date of wheat and the proper sowing quantity as well as the pre-winter seedling management are the important links in high-yielding wheat cultivation techniques. In the Huimin area (currently the main varieties to be promoted is Jinan No. 13 and Spoke 63), the agricultural departments think that the standard of strong seedlings before winter is 5-7 leaves of main stem, 3-5 tillers per plant, and the total number of stems is 70 -90 million / mu. Through the experimental observation of the tillering process of wheat, the relationship between leaf age, tiller number and accumulated temperature was studied. The function of tillering and accumulated temperature in wheat