Nitrogen Release Characteristics of Two Coated Urea Under Different Growing Media and Their Effect on Melon Growth at Nutrition Stage

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Chinese Agricultural Science Bulletin ›› 2016, Vol. 32 ›› Issue (13) : 66-70. DOI: 10.11924/j.issn.1000-6850.casb15100089

Nitrogen Release Characteristics of Two Coated Urea Under Different Growing Media and Their Effect on Melon Growth at Nutrition Stage

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Abstract

In order to explore the adaptability of melon to two kinds of coated urea in different culture media (soil and substrate), using the method of contact fertilization, a pot experiment was conducted to study the release characteristics of sulfur coated urea (SCU) and resin coated urea (ESN) in different media and their effects on the nutritional growth of melon. The results showed that the application of the two kinds of coated urea with the same nutrient level in two kinds of culture media could significantly promote the growth of melon, increase the chlorophyll content, soluble protein content and root activity, and their effects were significantly higher than that of common urea. Comparing the two kinds of coated urea, the nitrogen release rate of ESN at early stage was higher than that of SCU, therefore, the effects of ESN on the growth and physiological index of melon were better than that of SCU. Comparing the two kinds of culture media, the plant height, leaf area, chlorophyll content, soluble protein content and root activity in substrate with two kinds of coated urea were higher than those in soil with two kinds of coated urea.

Key words

coated urea; melon; nitrogen release rate; growth characteristics

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Nitrogen Release Characteristics of Two Coated Urea Under Different Growing Media and Their Effect on Melon Growth at Nutrition Stage. Chinese Agricultural Science Bulletin. 2016, 32(13): 66-70 https://doi.org/10.11924/j.issn.1000-6850.casb15100089

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