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Start Over Author "Li-Quan, Wu" Journal journal of integrative agriculture
2 results on '"Li-Quan, Wu"'

1. Determining nitrogen status and quantifying nitrogen fertilizer requirement using a critical nitrogen dilution curve for hybrid indica rice under mechanical pot-seedling transplanting pattern

Author

Bo YAO, Hai-bing HE, Hao-cong XU, Tie-zhong ZHU, Tao LIU, Jian KE, Cui-cui YOU, De-quan ZHU, and Li-quan WU

Subjects
rice, yield, critical nitrogen concentration, nitrogen nutrient index, Agriculture (General), S1-972
Abstract

Field experiments of nitrogen (N) treatment at five different application rates (0, 75, 150, 225, and 300 kg ha−1) were conducted under pot-seedling mechanical transplanting (PMT) in 2018 and 2019. Two high-quality and high-yielding hybrids of indica rice, Huiliangyou 898 and Y Liangyou 900, were used in this study. The N nutrition index (NNI) and accumulated N deficit (Nand), used to assess the N nutrition status in real-time, were calculated for the indica cultivars under PMT with a critical nitrogen concentration (Nc) dilution model based on shoot dry matter (DM) during the whole rice growth stage. The relationships between NNI and Nand with relative yield (RY) were determined, and accurate N application schemes were developed for hybrids indica rice under PMT. The results indicated that high application rate of N-fertilizer significantly increased the concentrations of shoot DM and N in aboveground organs during the observed stages in the two cultivars for two years (P

Published
2021
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2. Determining nitrogen status and quantifying nitrogen fertilizer requirement using a critical nitrogen dilution curve for hybrid indica rice under mechanical pot-seedling transplanting pattern

Author

Cui-cui You, De-quan Zhu, Li-quan Wu, Yao Bo, Hao-cong Xu, Ke Jian, Tie-zhong Zhu, Hai-bing He, and Liu Tao

Subjects
0106 biological sciences, Agriculture (General), chemistry.chemical_element, Plant Science, 01 natural sciences, Biochemistry, S1-972, Food Animals, Transplanting, Dry matter, Cultivar, Hybrid, critical nitrogen concentration, Ecology, biology, rice, food and beverages, 04 agricultural and veterinary sciences, biology.organism_classification, yield, Nitrogen, Dilution, Horticulture, chemistry, Seedling, Shoot, 040103 agronomy & agriculture, 0401 agriculture, forestry, and fisheries, Animal Science and Zoology, nitrogen nutrient index, Agronomy and Crop Science, 010606 plant biology & botany, Food Science
Abstract

Field experiments of nitrogen (N) treatment at five different application rates (0, 75, 150, 225, and 300 kg ha−1) were conducted under pot-seedling mechanical transplanting (PMT) in 2018 and 2019. Two high-quality and high-yielding hybrids of indica rice, Huiliangyou 898 and Y Liangyou 900, were used in this study. The N nutrition index (NNI) and accumulated N deficit (Nand), used to assess the N nutrition status in real-time, were calculated for the indica cultivars under PMT with a critical nitrogen concentration (Nc) dilution model based on shoot dry matter (DM) during the whole rice growth stage. The relationships between NNI and Nand with relative yield (RY) were determined, and accurate N application schemes were developed for hybrids indica rice under PMT. The results indicated that high application rate of N-fertilizer significantly increased the concentrations of shoot DM and N in aboveground organs during the observed stages in the two cultivars for two years (P

Published
2021

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