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Bacillus subtilis (B. subtilis) and Pseudomonas fluorescens (P. fluorescens) are two of the most important plant growth promoting rhizobacteria (PGPR) in agriculture. An in situ trial was conducted on greenhouse tomato (Lycopersicum esculentum Mill.) to examine the effect of two bacterial strains, Bacillus subtilis (CGMCC 1.3343) and Pseudomonas fluorescens (CGMCC 1.1802), on tomato growth, gray mold...
A field experiment was conducted to elucidate the regulation mechanism of different irrigation schedules on population photosynthetic of winter wheat. The experiment included five irrigation schedules, such as no irrigation (W0), irrigation once at jointing (W1j) or at booting (W1b), irrigation twice at jointing and booting (W2), and irrigation three times at jointing, booting and grain-filling (W3)...
A study was conducted to assess the effect of long-term fertilization on soil fertility, crop production and soil CO2 and N2O fluxes. The experiment was initiated in 1990 at the Yucheng Comprehensive Experiment Station located at the North China Plain. Five treatments comprising no fertilizer (0), NK, NP, PK and NPK were included. The yield effects of the chemical fertilizers were in the order of...
Large changes in land use and land management, which have had a tremendous impact on soil nutrients, have occurred in north China in recent years. Soil nitrogen is more influenced by human activities as the fertilizer application. We compared soil nitrogen in Yucheng County of Shandong province in 2003 to 1980 results from the Second National Soil Survey. The average contents of total nitrogen in...
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