施用硼肥对雪莲果产量与品质的影响

为雪莲果生产中硼肥的合理施用提供参考依据,采用田间试验方法,研究在雪莲果生长土壤区域喷施高(600 g/667m&2)低(200 g/667m&2)剂量硼肥(Na2B8O13)对雪莲果植株生长与果实品质的影响。结果表明:施加硼肥处理雪莲果的产量与总糖、维生素C、灰分及钙铁锌等微量元素含量较CK(等量清水)均显著提高,其中,低剂量和高剂量处理的产量较CK分别增加77.2%和211.2%;高剂量处理的总糖、维生素C、灰分及钙、铁、锌等微量元素含量较CK分别增加28.4%、163.6%、33.2%、73.3%、41.2%和56.2%。低剂量处理的雪莲果营养成分均低于高剂量处理。施加硼肥能够提高雪莲果块根的产量,改善其品质及提高钙、铁、锌与总糖等营养成分的含量。

Comparison Between the Students' Perceived and Expected Behavior of College English Teachers

Based on research concerning teachers＇ behavior, this study attempts to find out about the discrepancies between the students＇ perceived and expected behavior of College English teachers and the origins of those discrepancies. A total of 855 non-English majors from four colleges and universities in Zhejiang Province participated in the study. The research methodology consists of a survey and semi-structured interviews with 20 teachers and 40 students. Results showed that there exist significant discrepancies in the mind of college students between their perceived and expected behavior of College English teachers at all eight subscales, and these discrepancies could be attributed to three main reasons： different goals and understanding between teachers and students, lack of students＇ feedback, and teachers＇ prior learning experiences as students.