半包膜全程控释肥料养分释放规律及对水稻生长效应的研究

半包膜全程控释肥料是以专用有机膜将肥料中N、P、K有效成分的一半包被起来,使被包膜的养分成为控释性膜态养分,从而形成速效与缓效相结合的全程控释肥料。试验研究了半包膜全程控释肥料的养分释放规律及其对水稻生长效应的影响。结果表明:全程控释肥料在水稻生育前期和中期有两个释放高峰,全程供肥平稳,与水稻吸肥规律基本吻合,比对照增产29.5%;比生物菌肥加自配混合肥增产11.2%。

A Research on Nutrients' Release Pattern During the Whole Process Control of Half-mulched Fertilizing and its Effects on the Growth of Rice

In half-mulched fertilizing,we pack up half of the N,Pand K effective elements with organic membrane,making the nutrients inside controlled nutrients,so that controlled fertilizer is formed shich combines instant effect with longer-term effect.Research if done on the nutrients' release rule of half- mulched fertilizer and its effects on the growth of rice.As the findings show,in the whole process of controlled fertilizing there are two releasing peak periods in the early and middle stage of rice growth, with a balanced supply of fertilizer,which is in accordance with rice's fertilizer absorbing pattern,By doing this,we get a 29.5% more yield than the controlled group,and a 11.2% more yield than using biological fertilizer together with home-made mixed fertilizer.