First, the type of nutrition should be determined according to the weather conditions. In the weather, the photosynthesis is poor, the light in the greenhouse is insufficient, and the effect of spraying sugar or photosynthetic bacteria on the tomato leaf surface and titanium micro-fertilizer is b ...more...
Applicable medicine for controlling rice stalks at the ear o…
Laodelphax striatellus not only can cause viral diseases such as rice stripe disease, but also concentrate on panicle damage in late rice. In order to clarify the efficacy and drug-administration technology of pymetrozine and other drugs on the late rice earing stage, Cheng Qinhai and others in ...more...
CNR builds “the capital of track equipment manufacturing i…
Recently, it was learned from China CNR Co., Ltd. that the relocation project of Changchun Rail Transit Equipment Co., Ltd., a subsidiary of CNR, officially laid the foundation for the Changchun Rail Transit Equipment Manufacturing Industrial Park, marking the cooperation between CNR and Changchu ...more...
In the cultivation of greenhouse vegetables, if the shed is a sandy soil, most of them will leak and leak. The reporter learned from the Shouguang City Soil and Fertilizer Testing and Research Center that the hydrolyzable nitrogen and available potassium in the sandy soil generally do not reach ...more...
The tool industry should develop and grasp the new opportuni…
In the grim situation that the current global financial crisis continues to spread and deepen, and the economies of the world are generally declining, in order to cope with the financial crisis, governments have taken effective measures to stimulate economic recovery, and economic entities from a ...more...
Study on Wear and Machining Quality of Grinding Wheel in SiC…
Abstract Particle reinforced aluminum matrix composites are a typical difficult material to process. We have carried out experimental research on the surface quality of SiC particle reinforced aluminum matrix composites for surface grinding of electroplated diamond grinding wheels. The results sh ...more...
The new standard for rolling bearing carbide balls is about …
According to the announcement of the Ministry of Industry and Information Technology of the People's Republic of China (Engineering [2010] No. 82), the new standard for rolling bearing carbide balls (JB/T9145-2010) will be officially implemented on July 1, 2010. The standard is revised on the b ...more...