Comparison of One-time Application Effect of Three Kinds of Slow/Controlled Release Fertilizers on Rice

doi:10.11924/j.issn.1000-6850.casb15070085

Chinese Agricultural Science Bulletin ›› 2015, Vol. 31 ›› Issue (33): 1-5.doi: 10.11924/j.issn.1000-6850.casb15070085

Special Issue: 水稻

Received:2015-07-16 Revised:2015-08-19 Accepted:2015-09-15 Online:2015-11-26 Published:2015-11-26

Abstract

Abstract: In order to study the one-time application effect of three kinds of slow/controlled release fertilizers on rice, the chlorophyll (SPAD value), biomass, nitrogen uptake, soil effective nitrogen, yield and agronomic N use efficiency were determined through pot experiments with three kinds of slow/controlled release fertilizers A, B and C. The results showed that the fertilizers all exhibited high fertility, compared with CK, the content of effective nitrogen in soil after treatment increased 39.79%, 46.31% and 43.05%, the rice yield increased 34.72%, 53.09% and 41.38%, the agronomic N use efficiency of these three fertilizers was 15.0, 22.9 and 17.8 kg/kg, respectively. The fertilizer could significantly increase leaf chlorophyll content, promote nitrogen absorption and rice growth and improve the rice biomass and yield. One-time application of slow/controlled release fertilizer satisfied the growth of rice in all growth periods, and the order of the general effect of these three kinds of slow/controlled release fertilizers was B＞C＞A.

CLC Number:

TS143

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