The results showed that sparse planting promoted the emergence of tillers and resulted in the delay of maximal tiller stage and elongation of the period of productive tillers.

Effects of low density and retaining monopodiums on ventilation and penetrating light,and yield and quality of hybrid cotton Yuza 35;

Investigate the relation about variety and thin planting;

Thin planting increases effective tiller rate, raises two times tiller number of available spike, increases two times branch stalk number, so increases rice yiel.

The nutrition condition of endangered mechanism and conservation strategy of rare plants;

A study on verdical distribution and protection of rare plants in Baishuijiang National Reserve,Gansu;

Introduction of rare plants in Wenshan prefecture;

The resources of rare and endangered plants in Huangshan scenic spot;

Guangxi is possessed of 124 species of rare and endangered plants (REPs) of China, and is one of the provinces that rich in REPs in China.

Mass fraction and bioavailability of macronutrients of 21 ex-situ conservation rare plants in Wuhan Botanical Garden;

The distribution,the economic and scientific significance of 103 rare plants in West Hubei are discussed and some suggestions for profecting rare plants are also offered.

According to the investigation of species, quantity and distribution of the rare plants and ancient trees in Luofushan, this paper explored the significance in protection of rare plants and ancient trees.