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碳铵在高温下容易分解挥发,损失肥效,在水稻生长期间用作追肥,往往烧苗严重,产量损失极大.现行各种防止碳铵烧苗方法,如碳铵拌细土、傍晚撒肥、施肥时间保持一定水层、减少一次施肥量等,效果均不理想.调查发现群众在天黑后撒施,没有发生烧苗.在此基础上进行了多种比较试验,结果如下:1.稻田碳铵夜施,可以基本上防止烧苗.在7月高温季节,汕优3号和南京11号两个品种施用结果,在20时追施作穗肥,无论亩施30或60斤,拌与不拌细土,均未发生明显烧苗.田间基本上看不到
Ammonium bicarbonate is easily decomposed and volatilized at high temperature, losing fertilizer efficiency, and is often used as top dressing during rice growth, often with severe seedling burning and great yield loss. Various current methods for preventing ammonium bicarbonate seedling burning, such as finely mixing ammonium bicarbonate, spreading fertilizer in the evening , Fertilization time to maintain a certain water level, reducing the amount of fertilizer, etc., the results are not satisfactory. Survey found that the public spread in the dark after, did not occur seedlings. On this basis, a variety of comparative tests, the results are as follows: In the hot season in July, Shanyou No. 3 and Nanjing No. 11 two varieties of application results, topped at 20:00 for the panicle, regardless of the Mushi 30 or 60 pounds, Mixing and mixing fine soil, did not occur significantly burning seedlings. Field basically can not see