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１９９２年小区试验，丰收素对甜菜块根有增产效果，１９９３年的丰收素叶喷浓度、喷施次数和喷施时间试验结果表明，以５０００倍液于７月１５日和７月２５日两次叶喷块根比对照增产２５．１％，含糖率提高０．４５度；于７月１５日１次叶喷块根比对照增产１３．８％，含糖率提高０．５３度；７月２５日叶喷根产量最高，与７月１５日、８月５日和８月１５日叶喷比差异极显著；不同时期叶面喷施对块根含糖率没有影响。
1992 plot test, the abundance of sugar beet root tuber yield, 1993, the abundance of leaf spray concentration, spraying times and spray time test results show that 5000 times on July 15 and July 25 twice Compared with the control, the root yield increased by 25.1% and the sugar content increased by 0.45 degrees. On the 15th of July, the root of the leaf sprayed tuber increased the yield by 13.8% and the sugar content increased by 0.53 degrees. July 25 The root yield of leaves was the highest, which was significantly different from that of July 15, August 5 and August 15. Leaf foliar spray had no effect on the sugar content in different periods.