ZHANG Shu-Qing. Farmland nutrient balance of nitrogen, phosphorus and potassium in Gansu[J]. Chinese Journal of Eco-Agriculture, 2006, 14(1): 112-114.
Citation:
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ZHANG Shu-Qing. Farmland nutrient balance of nitrogen, phosphorus and potassium in Gansu[J]. Chinese Journal of Eco-Agriculture, 2006, 14(1): 112-114.
|
ZHANG Shu-Qing. Farmland nutrient balance of nitrogen, phosphorus and potassium in Gansu[J]. Chinese Journal of Eco-Agriculture, 2006, 14(1): 112-114.
Citation:
|
ZHANG Shu-Qing. Farmland nutrient balance of nitrogen, phosphorus and potassium in Gansu[J]. Chinese Journal of Eco-Agriculture, 2006, 14(1): 112-114.
|