Results 81 to 90 of about 976,060 (132)

[Dihydroartemisinin inhibits the progression of oral squamous cell carcinoma]. [PDF]

open access: yesHua Xi Kou Qiang Yi Xue Za Zhi
Shan T   +5 more
europepmc   +1 more source

[An investigation study on the technology and training level of ski patrol]. [PDF]

open access: yesBeijing Da Xue Xue Bao Yi Xue Ban
Bai P   +7 more
europepmc   +1 more source

寒冷地区双层覆盖式果树越冬技术

open access: yes, 2008
对果树越冬进行了不同覆盖方法的比较。结果表明:双层覆盖可以抵御-40℃的极端寒冷天气,果农不必担心冻害问题;而单层覆盖最低温度达-25℃的临界值,并且指出单层覆盖下增加覆草厚度对提高温度没有意义,结果与单层覆盖相同。双层覆盖的果实产量和品质都与传统土埋没有差异。双层覆盖每667m2的费用是传统土埋方法的46.3%,节省2 364元,节本增效。双层覆盖简便易行又能清洁生产,增强了果农种植果树的积极性。这种简单且成本低廉的双层覆盖技术 ...
李银芳
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