Peningkatan kualitas tanah sawah dan air buangan di saluran drainase pada tanah sulfat masam

Abstract

Oksidasi pirit pada tanah sulfat masam menurunkan kualitas tanah dan air buangan dari sawah. Peningkatan kualitas tanah pada pertanaman padi dapat dilakukan dengan pemberian bahan organik disertai dengan pengaturan air agar selalu dalam keadaan reduktif. Perbaikan kualitas air petakan dilakukan dengan pemberian air berkualitas baik (pH = 5,0) melalui pemanfaatan pasang besar dimusim kemarau dan air hujan pada musim hujan, sedangkan untuk memperbaiki kualitas air buangan dikembangkan sebuah sistem saluran drainase.

Oxidation of pyrite in acid sulphate soil reduced the quality of soil and discharged water from paddy field. Improvement of soil quality in paddy cultivation could be managed by addition of organic matter together with regulating water to maintain its reductive condition. Water quality improvement in the paddy field was conducted by addition of good quality water (pH=5,0)through utilization of high tide water in dry season and rain water during rainy season while for improvement of discharged water, a system of drainage channel was developed