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研究了池栽条件下灌溉量对冬小麦籽粒产量和土壤硝态氮含量的影响。结果表明:与对照相比,灌溉增加了籽粒产量,显著提高蛋白质含量和蛋白质产量。试验还表明:灌溉处理0～80cm土层的土壤硝态氮含量显著低于对照,而在80～200cm土层的土壤硝态氮含量显著高于对照。在成熟期,两次灌溉总量为180m(m每次灌90mm)的处理W6硝态氮含量在160～200cm显著高于其他处理,向深层运移幅度最大。本试验中,两次灌溉总量为90m(m每次灌45mm)的处理W3的籽粒产量、蛋白质含量、蛋白质产量和收获指数均较高,且土壤硝态氮损失少,为最佳灌溉量。
The effects of irrigation amount on winter wheat grain yield and soil nitrate nitrogen content were studied. The results showed that compared with the control, irrigation increased the grain yield and significantly increased the protein content and protein yield. The experiment also showed that the content of soil nitrate nitrogen in irrigation 0 ~ 80cm soil layer was significantly lower than that in the control, while the soil nitrate nitrogen content in soil layer 80 ~ 200cm was significantly higher than the control. During the mature period, the total nitrate content of W6 was significantly higher at 160 ~ 200cm than that of other treatments at the two irrigation times of 180m (m). In this experiment, the grain yield, protein content, protein yield and harvest index of W3 treated with 90% irrigation twice (45mm irrigation time per treatment) were higher, and the loss of soil nitrate nitrogen was less, which was the best irrigation amount .