Appropriate time of plant- resources relationship regulation
After planting weather planting or sowing, as plant grow, the available
resources reduced. For example, the suitable sowing rate of Caragana
young forest is 1.5kg/100m2, and the suitable density
is 6500 plants / 100m2 in the semiarid loess hilly
region. As the caragana plant grows, soil water content in the maximal
infiltration depth of 290 cm reduces, and soil desiccation has been
emerged in perennial non-native shrubland. When caragana is at 5-years
old on Jun.15, 2006, soil water resources
in the maximal infiltration depth
of 290 cm are smaller than 222.8mm, showing that the plant-water
relation enters the critical period of plant-water relationship
regulation and regulation of plant water relationship should be
considered, see figure 5.