120 pairs of SSR primers and 63 pairs of In Del primers were used to determine genetic variation among diploid,triploid and tetraploid watermelon genomes. The r
Through the collection of related literature,we point out the six major factors influencing China’s forestry enterprises’ financing: insufficient national sup
This paper studied the effect of reducing application of chemical fertilizer,increasing application of functional organic fertilizer and trace elements and full
This paper conducts a comprehensive survey of the ground cover plant in Tibetan herb garden for the first time using ' five-point sampling method'. Surv
The 21st century is the time of brand strategy showing its position and importance in operation of enterprises.Rapid rise of the brand strategy in operation and
This paper aims to evaluate ecological benefits of maize harmful and beneficial elements in Hetao agricultural economic zone. Maize rhizosphere soil,seed,stem a