During three years, compared with P0K0, the increased pasture yield was obtained by P180K0. In establishment stage ,for mixed sown pasture, the economical fertilization was pure phosphorous 95.4 kg/hm 2 and pure potassium 13.9 kg/hm 2 ;
Comparative research on the influence of chemical fertilizer application and enclosure on alpine steppes in the Qinghai Lake areaⅠ Structure and species diversity of the plant community
Comparative studies on the influence of chemical fertilizer application and enclosure on alpine steppes in Qinghai Lake area ⅡSeasonal and Annual Biomass Dynamics
The results show:(1 )Fertilizer application in early spring and late autumn increased pastureproduction from 6378kgDM/hm2 in no optimum stage to 7l66kgDMIhm2, and to8281 kgDM/hm2 in monthly optimum stage.
A fertilizer application of 100 kg nitrogen, 50 kg P 2O 5 and 50 kg K 2O per hectare was recommended as an economical way for increasing the number of reproductive shoots of zoysiagrass, and hence increasing the yield of seeds.
A suitable combined programme for fertilizer applications were N: 75130 kg/hm2,P2O5:50.0-112.5 kg/hm2 from tillering to the first ten days of July,with no or little potassium fertilizer.
The banded improved-pasture of highslop was conducted, and fertilizer on the surface with broadcasting, the tests consisted of 4 treatments: N90fertilizer, P60fertilizer, N90+P60 fertilizer and CK, studying the effects of different fertilizing on the Old World bluestem rangeland.
A cutting orchard of 0.33 hm2 on the hillside was constructed to intensively produce cuttings according to the tests on construction methods, pruning, and fertilization.
The effects of different timing of N fertilizer application at the same rate on grain β-amylase activity, protein concentration, weight and malt quality of barley were studied.
There were obvious differences between barley varieties and experimental years in the grain and malt quality response to the timing of N fertilizer application.
Considering the problem of low proliferation rate of bamboo propagules, a study was conducted to see the effect of culm number, fertilizer application and their interaction on growth and proliferation behaviour of Dendrocalamus strictus Roxb.
Results of the study indicate that culm number and fertilizer application affect only the biomass of the plants, while the proliferation of the bamboo propagules was unaffected by these treatments (P ≤ 0.05).
To promote afforestation in sandy lands and increase the effects of prevention and control of desertification, the application of a new drought-resistant product-solid water and foliar fertilizer "Shifengle"-was studied.
A comparison of three treatments (solid water, foliar fertilizer, and control) showed that both solid water and foliar fertilizer increased plant survival rate by 10% and 18.2%, respectively.
Ltd had a higher carbon conversion of 3%, a lower specific oxygen consumption of about 8%, and a lower specific carbon consumption of 2%-3% than that of Texaco CWS gasification at the Lunan Fertilizer Plant.
The results show that fertilizer and soil are important factors determining the aerosol particle over agricultural fields, and vegetable fields in suburban Beijing contribute significantly to the aerosol particle.
The results of comparative crosses of crucian carps with different ploidy suggest a high fertilizing capacity of triploid males, as well as normal viability of their progenies.
The determination of 16 different chemical and physicochemical characteristics is principally needed for prognosis of the land treatment and fertilizing.
Different Ca2+-permeable channels have been detected in the plasma membrane and in the organelle-like acrosome membrane of sperm, which play vital roles in determining sperm fertilizing ability.
施肥
fertilization 
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