论文部分内容阅读
大家知道,冬至以后一个月左右,特别是“三九、四九”,是一年中平均气温最低的时期。在这段时间里,低温是影响三麦发根分蘖的主要因素。因而,狠抓拍麦,提高地温,促进三麦分蘖发根,是三麦冬季管理中的一项十分重要的工作。宝山县刘行中学气象哨,在“三九”期间,对扬麦一号小麦进行拍麦对比试验,结果如表。由表可见,(1)拍麦可以提高麦田地温0.5～1.1℃;(2)表土层增温幅度大于深层,拍麦后5厘米地温平均增加1.1℃,10厘
We all know that a month or so after the winter solstice, especially “39 and 49”, is the year when the average temperature is the lowest. During this time, low temperature is the main factor affecting the tillering of three wheat roots. Therefore, pay close attention to wheat, improve ground temperature, promote three-tillering and rooting of wheat root, is the three wheat winter management is a very important work. Baoshan County Liu Xing middle school meteorological post, in the “39” period, Yang wheat wheat wheat contrast test, the results shown in the table. As can be seen from the table, (1) Pielou can increase the temperature of wheat field by 0.5 ~ 1.1 ℃; (2) the warming rate of topsoil is higher than that of the deep layer; average temperature of 5 cm Pielou increased by 1.1 ℃ and 10%