arrhythmic
发表于 2025-3-26 21:27:14
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invulnerable
发表于 2025-3-27 03:31:43
eficiencies. Indeed, 50% of the increase in rice yieldsafter World War II can be attributed to increased fertilizer nitrogenuse. Although an increased rate of fertilizer nitrogen application hasbeen advocated to meet the growing demand for food, it is unrealisticto advise the farmers to apply fertil
Left-Atrium
发表于 2025-3-27 08:39:02
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Commodious
发表于 2025-3-27 12:08:52
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forbid
发表于 2025-3-27 14:20:28
Nitrogen balance studies in ,/rice cropping systems,tilizer N occur under flooded conditions, there is however, little information on the fate of the N which is not recovered by the crop. The primary objective of this experiment is therefore to obtain information on the fate of N which is not taken up by the rice plants.
Frequency
发表于 2025-3-27 17:58:30
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Insubordinate
发表于 2025-3-28 01:09:02
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Basilar-Artery
发表于 2025-3-28 02:52:52
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轿车
发表于 2025-3-28 09:56:13
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强化
发表于 2025-3-28 12:34:36
Residual effects of , N to a second crop of rice or wheat,t et al., 1979). Watanabe et al. (1989) reported that losses of .N labelled N after a rice crop was higher from .N labelled urea (20%–30%) than from .N labelled . (0%–11%). Consequently more residual N is expected to be left in the soil following treatment with . than with chemical fertilizers.