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在早稻试验中，大粒尿素（ＬＧｕ）和大粒尿硼（ＬＧｕ＋Ｂ）能显著地提高稻谷产量，平均每田增产１３．８ｋｇ，其中ＬＧＵ＋Ｂ的增产效果最佳。ＬＧｕ、ＬＧｕ＋Ｂ能促进稻株对肥料氮素的吸收，提高氮肥利用率７．９％。普通尿硼（Ｐｕ＋Ｂ）随着含硼量增加，氮肥利用率也随之提高，提高幅度达４．０～１０．４％。稻田水层尿态氮和铵态氧测定结果表明：ＬＧｕ、ＬＧｕ＋Ｂ水层尿态氮和铵态氮含量较低，尿素添加硼后能有效地降低尿素水解速率，对控制稻田氨挥发具有一定作用。
In the early rice experiment, the output of paddy increased significantly with the increase of LGU and LGu + B, with an average yield of 13.8 kg / field. The yield of LGU + B was the best. LGu and LGu + B can promote the absorption of fertilizer nitrogen by rice plants and improve the utilization rate of nitrogen fertilizer by 7.9%. Ordinary urinary boron (Pu + B) with the increase of boron content, nitrogen fertilizer utilization rate will also increase, an increase of 4.0 to 10.4%. The results showed that the contents of urinary N and NH4 + -N in the aqueous layer of LGu and LGu + B were lower than those of the control. The addition of boron to urea could effectively reduce the rate of urea hydrolysis and play a certain role in the control of ammonia volatilization .