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氮磷肥对黑土玉米农田生态系统土壤微生物量碳、氮的影响

open access: yesShuitu Baochi Xuebao, 2004
通过田间氮磷肥配施试验研究了氮磷配施对黑土玉米农田生态系统玉米不同生育时期微生物量碳、氮的影响。微生物量随玉米不同生育期的动态变化表明,氮磷肥对微生物量碳和微生物量氮的动态影响并不同步,微生物量碳和微生物量氮变化最显著的时期均是授粉期,但此时微生物量碳是最低的谷值,而微生物量氮是最高的峰值。不同氮磷配比对微生物量碳影响的回归分析表明,氮肥是影响微生物量碳的主导因素,无论是适量施用还是过量施用都是氮肥对微生物量碳的影响较大。不同氮磷配比对微生物量氮影响的回归分析表明 ...
王继红 刘景双 于君宝 王金达
doaj   +2 more sources

Nitrogen deposition does not exacerbate phosphorus limitation of rhizosphere microbes in subalpine forests

open access: yesFunctional Ecology, Volume 40, Issue 5, Page 1428-1442, May 2026.
Read the free Plain Language Summary for this article on the Journal blog. Abstract The stoichiometric imbalance caused by nitrogen (N) deposition typically exacerbates phosphorus (P) limitation in plants. However, it remains unclear whether this effect extends to soil microbes, particularly those in the rhizosphere.
Jipeng Wang   +5 more
wiley   +1 more source

不同有机肥及用量对矿区复垦土壤有效磷含量及供磷特性的影响

open access: yesShuitu Baochi Xuebao, 2021
为研究有机肥培肥复垦土壤过程中磷的有效性如何变化、不同有机肥在什么施磷水平下能使作物取得最大生产效率以及合理培肥土壤,依托采煤塌陷定位培肥试验基地(山西省孝义市偏城村),在4个磷水平下(0,25,50,100 kg/hm2)研究不同肥料(鸡粪、猪粪、牛粪和化肥)对玉米产量及土壤速效磷含量的动态变化。经过2年的田间试验,结果表明:(1)施用有机肥和化肥均能显著提高玉米籽粒产量,随着施磷量的增加,玉米籽粒产量呈先增加后基本不变的趋势,通过构建2年磷肥效应方程发现,化肥、鸡粪 ...
张博凯   +6 more
doaj  

Elevation, soil pH and calcium availability shape regional and local scale spatial patterns of PhoD gene abundance in tropical and subtropical forests

open access: yesFunctional Ecology, Volume 40, Issue 4, Page 983-1000, April 2026.
Read the free Plain Language Summary for this article on the Journal blog. Abstract Organic phosphorus mineralization is a critical process in the phosphorus cycle, governing phosphorus bioavailability for plants. The PhoD gene, which encodes the key enzyme alkaline phosphatase, serves as a valuable biomarker for this process.
Sandhya Mishra   +3 more
wiley   +1 more source

Variation in leaf phosphorus fractions reflects plant adaptations and distribution in low‐phosphorus tropical forests

open access: yesFunctional Ecology, Volume 39, Issue 2, Page 621-634, February 2025.
Read the free Plain Language Summary for this article on the Journal blog. Abstract Tropical forests are generally characterized by high species diversity and low soil phosphorus (P) availability. Although tropical plants have evolved adaptations to low soil P availability, we know relatively little about the strategies of different groups of species ...
Yingxu Fan   +11 more
wiley   +1 more source

Effects of different phosphate fertilizers on the availability and bioaccumulation of cadmium in the tea garden soil(磷肥对茶园土壤中镉有效性及其生物累积的影响)

open access: yesZhejiang Daxue xuebao. Lixue ban, 2015
通过温室盆栽试验,研究了在不同培养期内(1,2和4个月),不同磷肥(过磷酸钙、磷酸二氢钾、钙镁磷肥)及施磷量(P2O5 0.2,0.5 g • kg-1)对镉污染茶园土壤pH值、土壤有效态镉含量及茶树镉吸收累积量的影响.结果表明:钙镁磷肥的施加可有效提高茶园土壤的pH值,过磷酸钙和磷酸二氢钾对pH值的提高则不明显;过磷酸钙和钙镁磷肥均提高了 土壤有效态镉含量,且施磷量不同影响规律亦不同,而磷酸二氢钾对土壤有效态镉含量的影响不显著;茶树累积镉含量为根>茎>叶,根系对镉的富集能力极强 ...
LUYYamin(吕亚敏)   +3 more
doaj   +1 more source

磷硅肥配施对盐渍土壤水稻生长及养分吸收的影响

open access: yesShuitu Baochi Xuebao, 2020
针对滨海盐渍化稻田土壤根系易受盐碱胁迫、磷素养分含量及有效性低的问题,采用田间微区试验研究磷肥与硅肥配施对滨海盐渍化稻田土壤水稻根系生长、土壤磷素含量、水稻磷营养、产量及经济效益的作用。试验采用双因素设计,磷肥设2个水平:P1,P2O5 64 kg/hm2;P2,P2O5 128 kg/hm2;硅肥分土施和喷施,土施设3个水平:Si1,SiO2 0 kg/hm2;Si2,SiO2 60 kg/hm2;Si3,SiO2 120 kg/hm2;Si4为叶面喷施SiO215 kg/hm2。结果表明 ...
娄金华   +5 more
doaj  

海水灌溉库拉索芦荟氮磷配施效应研究

open access: yesShuitu Baochi Xuebao, 2006
采用田间小区试验研究了30%海水灌溉下1年生库拉索芦荟氮、磷两因素各五水平组合的效应,建立了芦荟叶片产量与氮、磷用量的回归方程。结果表明:芦荟叶片产量在施氮、磷肥量分别为N2~N3及P2~P3范围内取得最大值;通过计算,30%海水灌溉下2年生芦荟叶片的最高产量为Ymax=26015kg/hm^2,最高产量下氮、磷肥施用量分别为Nmax=141.9kg/hm^2、P2O5max=84.0kg/hm^2。在同一施磷水平下,芦荟单叶重均随着施氮量的增加而增加,但相同施氮量的各施磷组合芦荟单叶重在P2 ...
汪吉东   +7 more
doaj  

节水灌溉方式与磷钾肥减施对小麦产量、品质及水肥利用效率的影响

open access: yesShuitu Baochi Xuebao, 2020
为探明滴灌、微喷灌和磷钾肥减施对小麦产量、品质及水肥利用效率的影响,通过田间试验,以漫灌常量施肥为对照(CK),设滴灌(W1)和微喷灌(W2)2种节水灌溉方式,生育期均灌水4次,即越冬水+返青水+拔节水+灌浆水(越冬水、拔节水灌水量600 m3/hm2、返青水和灌浆水灌水量300 m3/hm2);W1和W2下设磷钾肥常量(RPK)和磷钾肥减施20%(RPK-20),30%(RPK-30)和40%(RPK-40),施用方式均底肥撒施50%,返青期和拔节期水肥一体化各施25%;以磷钾肥常量全部底施为相对对照(
张晶   +6 more
doaj  

氮磷配施对苹果幼苗生长、土壤无机磷形态和磷素利用的影响

open access: yesShuitu Baochi Xuebao, 2021
以矮化苹果砧木M9T337幼苗为试材,设置4个氮水平(N 0,150,300,450 mg/kg,分别以N0、N1、N2、N3表示)和2个磷水平(P2O5 100,200 mg/kg,分别以P1、P2表示),研究了氮磷配施对苹果砧木幼苗生长、土壤无机磷形态转化和磷素吸收利用的影响,以期为果园磷肥高效利用提供参考依据。结果表明,不同氮磷配施显著影响M9T337幼苗生物量及根系形态,以N2P2处理效果最佳,其次为N1P2处理。植株磷素积累量及磷肥利用率分别在N2P2、N2P1处理下达到最大值 ...
张鑫   +6 more
doaj  

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