论文部分内容阅读
近年来,我区许多稻田种植水稻相继发生缺硫现象,严霞影响水稻产量,成为水稻增产的一个重要障碍因素。据笔者试验观察,赣州地区水稻缺硫有两种症状:一种是冲积物发育的沙泥田,水稻顺着叶脉出现椭圆形黄褐色斑点,不分蘖,植株矮小;另一种是花岗岩发育的白沙泥田,水稻整个叶片淡黄色,不分蘖,植株矮小。前者有人认为缺钾,但增施钾肥并不能消除症状;后者有人认为缺氮,但增施不含硫素的氮肥,反会使症状加重。现根据我们连续三年的研
In recent years, many paddy fields in our region have been lack of sulfur in planting rice, Yan Xia affect rice yield, rice yield an important obstacle. According to the author’s experimental observation, there are two symptoms of sulfur deficiency in Ganzhou: one is sandy muddy field with alluvial development, the rice appears oval-shaped brownish brown spots along the leaf vein, without tillers and plants are short; the other is white sand with granite development Muddy fields, rice, the entire leaves light yellow, without tillers, plants short. Some people think that the former potassium deficiency, but increased potassium does not eliminate the symptoms; the latter that some people think that nitrogen deficiency, but the additional sulfur-free nitrogen fertilizer, anti-will make the symptoms worse. Now based on our continuous three years of research