一、中国农业发展所面临的主要问题中国是世界农业的起源地之一,拥有上万年的历史。中国农业取得了伟大的成就,养活了世界上最多的人口。同时哺育了灿烂的中华文化。也给世界文明做出了巨大的贡献。历史事实不可争辩地说明,这是一种可持续的农业。但中国农业的问题至今依然没有解决。靠什么吃饭?谁来养活中国?一直就是个问题。毫无疑问,问题的关键在于耕地。2008年年底 ...
曾雄生
core
Shuitu Baochi Xuebao目的为明确AquaCrop模型在新疆伊犁地区膜下滴灌玉米生长和生产模拟的适用性，并探究玉米生育期最优灌溉，为农民提供灌溉量决策的参考，提高玉米产量和水分利用效率。方法利用伊犁南岸灌区试验站点2020—2021年膜下滴灌玉米灌溉试验数据对AquaCrop模型进行参数率定和校核，并用校核好的模型揭示3种降水年型（丰水年、平水年、枯水年）和8种灌溉水量（4 000~5 400 m3/hm2）对玉米生长、产量和水分利用效率的影响。结果通过大田试验玉米的冠层覆盖度、生物量、产量、水分利用效率对模型进行校准验证 ...
赵向东 +10 more
doaj
[Application of active glucose monitoring in the perioperative period of gastrointestinal endoscopy in children with glycogen storage disease type Ⅰb]. [PDF]
Zhongguo Dang Dai Er Ke Za ZhiYang J, Wu HT, Ma N, Wu JX, Yang M.
europepmc +1 more source
[Rapid and simultaneous determination of 11 ergot alkaloids in cereals and their products by ultra performance liquid chromatography-tandem mass spectrometry combined with Captiva EMR-Lipid column purification]. [PDF]
Se PuLiu B +6 more
europepmc +1 more source
Shuitu Baochi Xuebao[目的] 为探究坡耕地等高反坡台阶整地对玉米连作和玉米—芸豆轮作系统根土微生态特征的影响。[方法] 以玉米—芸豆轮作为研究对象,玉米连作为对照,采用野外原位监测采样和室内试验分析相结合的方法,通过GC-MS和高通量测序技术分析作物根系分泌物和土壤微生物群落组成、结构特征,揭示坡耕地等高反坡台阶整地对玉米连作和玉米-芸豆轮作根系分泌物种类、含量和土壤微生物群落组成及多样性的影响。[结果] (1)根系分泌物相对含量变化在CRT措施上更为突出,在轮作模式中更为显著。(2) CRT2处理提高土壤微生物群落数量 ...
鲁连欣 +4 more
doaj
[Effects of elastic modulus of the metal block on the condylar-constrained knee prosthesis tibial fixation stability]. [PDF]
Sheng Wu Yi Xue Gong Cheng Xue Za ZhiZhang Y +6 more
europepmc +1 more source
[A case of liver cirrhosis combined with reactive perforating collagen disease]. [PDF]
Zhonghua Gan Zang Bing Za ZhiHan XX, Zhang ZJ, Wang QY.
europepmc +1 more source
Advances in modification and delivery of nucleic acid drugs. [PDF]
Zhejiang Da Xue Xue Bao Yi Xue Ban, 2023 Wang J, Tan M, Wang Y, Liu X, Lin A.
europepmc +1 more source
[Advances in Nanozyme-Aptamer Systems for the Detection of Foodborne Pathogens]. [PDF]
Sichuan Da Xue Xue Bao Yi Xue BanLiang H, Jia S, Zhan Z, Cai Y, Niu X.
europepmc +1 more source
[Clinical analysis and follow-up outcomes of 25 pediatric cases with hepatic glycogen storage disease]. [PDF]
Zhonghua Gan Zang Bing Za ZhiLiu WW +5 more
europepmc +1 more source