Conservation agriculture improves yield and potassium balance in intensive rice systems
Nutrient Cycling in Agroecosystems(2024)
摘要
Intensive rice-based systems are mining soil potassium (K) due to negative K balances. Conservation Agriculture (CA) practices may increase yield and economic return of rice-based systems but there is limited understanding of their effects on K pools and balances. This study evaluated crop productivity and K input–output balances under contrasting rice-based intensive cropping and long-term CA. The comprised three factors- (a) soil disturbance (strip planting, SP and conventional tillage, CT); (b) residue retention (low, LR, 20 cm by plant height and high, HR, 50 cm) and; (c) K application-100
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关键词
Conservation agriculture,K balance,Residue retention,Strip planting,K fertilizer,System yield
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