不同膜质材料制成包膜肥料对抑制氮素挥发效果的研究

Inhibiting Effect of N-volatilization from Different Coated Fertilizers

本文研究用三种不同膜质材料覆膜制成包膜肥料,(分别用代号PG、PGg、PG f表示)对抑制氮素挥发的影响。结果表明,与CK相比,PG、PGg、PG f的氮素挥发总量分别减少了18.1%、26.0%和19.3%。其中,PGg型膜质材料制成的包膜肥料抑制氮素挥发效果最为明显,是理想的包膜材料。

The coated fertilizer was prepared by coating with three different membranes, i. e. PG , PGg and PGf. The effect of the coated N fertilizer on N volatilation was studied. The results indicated, compared with uncoated fertilizer （CK） ,the total amount of N volatilization of PG,PGg and PG reduced by 18.1% ,26.0% andl9.3% ,respectively. The inhibiting effect was most significant for PGg.