Results 21 to 30 of about 4,235 (156)
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
ABSTRACT Objective To assess the association between increased maternal prepregnancy body mass index (BMI) and the risk of congenital heart defect (CHD) in offspring. Methods This systematic review and meta‐analysis searched PubMed/MEDLINE, Web of Science and Scopus from inception to 20 April 2023.
N. Salmeri +5 more
wiley +1 more source
Lianas shift towards larger sizes and more acquisitive trait values in an Asian tropical rainforest
Liana communities showed a shift in trait values indicating that they changed towards more large, acquisitive lianas with rapid water use. There are more larger stems through time due to the relatively low mortality of the larger individuals, which is associated with relatively low levels of disturbance.
Qi Liu +3 more
wiley +1 more source
A new disease resistance, early ripening tomato variety – Xia Fen (pink colour tomato) [PDF]
摘要利用黄粉选6 株系作母本, 8512 作父本配制而成的一代杂种一霞粉, 熟期较对 照苏抗9 号早3 一5天, 抗烟草花叶病毒病, 早熟、丰产, 每66.7m, 早期产量263kg, 总产量4436kg。果实圆整, 品质好, 单果重150 一1809, 适宜保护地早熟栽培及春秋季露地 栽培。 现已在江苏 安徽、山东、浙江、天津、江西、上海、湖北等省市大面积推广。关键词番茄; 霞粉 ...
Long, M, Lu, C, Xu, H, Yang, R, Yu, W
core
Effects of Bio-based Compound Amendments on Overall Soil Fertility of Coastal Saline Soils [PDF]
[Objective] The effects of bio-based composite amendments on the physicochemical properties and microbiota of saline soils in the Yellow River delta and the Northern Jiangsu mudflats were determined in order to provide a scientific reference for the ...
Gan Quanfeng +5 more
core +1 more source
不同培肥处理对采煤塌陷地复垦土壤生化作用强度及玉米产量的影响
利用不同培肥处理对晋城采煤塌陷区复垦土壤微生物生化作用强度及玉米产量进行研究,结果表明:当每个培肥处理施入等量的氮(N)、磷(P2O5)时,有机肥+化肥+菌肥处理的氨化、纤维素分解作用强度好于其余处理且在复垦第3年达到最高,与有机肥+化肥差异显著;单施有机肥的硝化作用强度最大,与有机肥+化肥+菌肥处理差异不明显;对照的固氮作用强度最大与其余处理差异显著;有机肥+化肥+菌肥的产量高于其余处理,有机肥+化肥次之,除有机肥+化肥+菌肥与有机肥差异显著外,其余差异都不显著;氨化、硝化 ...
梁利宝 +3 more
doaj
以19年的长期定位施肥土壤为材料,研究不同施肥管理:不施肥(CK),施无机肥(N、NP、NK、NPK),施有机肥(OM),有机-无机配施(F、F’)下稻田耕层土壤有机碳库组分及含量变化。结果表明:不同施肥方式对土壤有机碳及其组分有显著影响,土壤总有机碳(TOC)变化趋势为有机无机配施(平均12.34g/kg)>单施有机肥(平均12.15g/kg)>无肥(平均10.56g/kg)>化肥(平均9.78g/kg);有机肥和化肥配施土壤微生物量碳(SMBC)、水溶性有机碳(WSOC)、轻组有机碳(LFOC ...
廖敏 +7 more
doaj
A new type of cucumber variety – early ripening by breeding female cucumber hybrids [PDF]
摘要利用雌性系Wl 5207G 为母本, 长春密刺选系(9一1一3一4一l) 为父本配制的黄瓜一代杂种早抗, 具有极早熟、耐低温、弱光能力强、抗病性好、品质优等特点。 长江流域春季大棚栽培每666.7m2 产量达4000kg, 比宁丰3 号增产19.1%, 冬一季日光温室栽培可达5000kg 以上。目前已推广到国内10 多个省市, 推广面积约13 3.3 hm2。关键词黄瓜; 早抗 ...
Lu, C, Xu, H, Yang, R, Yu, W
core
通过田间试验研究了有机无机肥配合施用对土壤-油菜系统重金属平衡的影响。试验设置化肥(T1)、化肥+低量有机肥(T2)、化肥+中量有机肥(T3)、化肥+高量有机肥(T4)等4个处理,各处理施肥量相等.重复4次。试验结果表明.在等养分条件下,有机肥比例过高会降低油菜地上部及籽粒的干重;不施有机肥和施用低量有机肥会导致锌和铜的亏缺,施用高量有机肥有可能引起土壤中镉的积累,适量有机肥与化肥配合施用既可保持微量营养元素的平衡,也能有效地降低重金属污染风险.是建立可持续农业的有效途径。
孔文杰, 倪吾钟
doaj

