Search Results - Guang Huo

This article describes how to use TechnoGIN to calculate crop nutrition limiting factors and to realize target yield in Pujiang county. At the present agricultural level of china, the same crop on different land units may suffer different degrees of nutrient excess and different farm crops on the sa...

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Rice is one of those crops that have a relatively high requirement for potassium. The demand of rice for potassium is characterized by its remarkable variations with varieties and seasons. In order to obtain information about the peculiarities of hybrid rice in potassium absorption and utilization,...

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Chemical reactivity and dissolution characteristics of three phosphate rocks from Kunyang, Yu'nan Province, Kaiyang, Guizhou Province, and Wucun, Jiangxi Province were studied. The crystallographic parameters and composition of the apatites in the three phosphate rocks were determined by X-ray...

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Dissolution and availability characteristics of two phosphate rocks namely Kaiyang phosphate rock (GPR) and Wucun phosphate rock (WPR) were investigated by incubation in three flooded acid paddy soils with similar properties except P status. Results show that P adsorption capacity of soil NK and CK...

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The kinetics of NH₄⁺ adsorption and desorption by a natural zeolite clinoptilotite were investigated. Kinetic models evaluated at different equilibrium NH4⁺ concentrations included the first-order kinetics, modified Freundlich, par...

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Characteristics of phosphate sorption and sorbed-P release in paddy soils were studied using adsorption isotherm and ion exchange resin method. The results show that phosphate adsorption isotherm of 20 rice soils of Jinhua City of Zhejiang Province fitted in with Langmuir equation very well. The cor...

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A four-year field experiment was conducted on a calcareous paddy soil in Zhejiang Province to quantify the dynamics of soil phosphorus (P) pools and their influence on rice grown in an irrigated double-cropping system. Treatments included an unfertilized control (CK) and three different fertilizer t...

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In China, average rate of N application for rice production is high and fertilizer-N use efficiency is low compared with other major rice growing countries. Environmental pollution by nitrogen leaching or runoff from rice fields has become a serious concern. In cooperation with IRRI scientists, we d...

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Pot experiments on three acid paddy soils with different P status were conducted to investigate the effects of P fertilizers on ryegrass growth and changes of soil P fractions after ryegrass planting. The results show that application of P fertilizers increased dry matter weight and P uptake of ryeg...

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The effect of fertilization on ecological characteristic of soil microorganism was studied in thermostatic culture. The results showed that microbial biomass carbon were significantly higher in RS and PM treatment compared to the CF or CK (P<0.05). During the 14 to 42 days incubation, the mic...

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This article presents the application of untreated graphite tailings in foamed concrete by studying the properties of graphite tailings. It also investigates the effects of raw materials, water–cement ratio, and curing methods on the density, strength, and frost resistance of graphite tailings foame...

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