高产冬小麦对氯元素吸收积累与分配规律的研究

Studies on the Characteristics of Chlorine Absorption Accumulation and Distribution in High-Yielding Winter Wheat

在高产栽培条件下,于1991～1994年采用不同品种,研究了冬小麦植株体内氯浓度动态规律,品种及年际间差异;植株对氯的吸收积累动态,阶段吸氯强度及吸收比例。结果表明:植株吸氯强度最高值在拔节～挑旗阶段;积累最高值在灌浆盛期,成熟期积累量较最高值降9.51％;此时每百公斤生物产量吸收氯0.74kg,百公斤籽粒吸收氯1.57kg。明确了氯在成熟期植株内,各器官20个部位的浓度含量及分配率。

The dynamic law of chlorine concentration, the differences among cultivars and years, the dynamic law of chlorine absorption and accumulation, the absorption intensity and absorption proportion of chlorine in different development period of high yielding winter wheat plants were studied in 1991~ 1994 with several varieties. The results show, the absorption in tensity of chlorine maximized from jointing to flag stage, the highest value of chlorine accumula tion was at the filling stage. In the mature stage, the accumulation content decreased by 9.51% , compaired with the highest value. The absorption amount of chlorine per 100 kg of biological yield was 0. 74kg and 1.57kg of chlorine per 100kg grain yield. The concentration and distribu tion proportion of chlorine in 20 parts of various organ in mature were studied.