水肥条件对冬小麦生理特性及产量影响的试验研究

Effects of Soil Moisture and Fertilizer on Physiological Property and Yield of Winter Wheat

采用盆栽和池栽相结合的方法进行了不同水肥条件对冬小麦生理特性及产量影响的试验研究，结果表明：同一施氮水平，正常土壤水分条件下，冬小麦的硝酸还原酶活性（ＮＲＡ）、光合强度和其它生理特性较干旱条件下强；同一土壤水分条件下，盆栽施氮量在０ｋｇ／ｈｍ２～３００ｋｇ／ｈｍ２范围内，冬小麦生理特性随着施氮量的增加而增加，当正常水分处理超过２４０ｋｇ／ｈｍ２、干旱处理超过１８０ｋｇ／ｈｍ２时将减少。

The results of pot and trails are as follows. With equal amount of nitrogen (N)applied, wheat nitrate reduction activity (NRA) and photosynthesis strength and other physiological properties are stronger, and yield ishigher in normal moisture than that in drought. In the same soil moisture andwith N applied being 0～300 kg/hm 2 , the properties and yield of wheat increase with the increasing of N applied , but they descend when the amount of N applied exceeds 240 kg/hm 2 in normal moisture and 180 kg/hm 2 in drought .