The seed of \%Taxus chinensis \%(Pilger) Rehd.\ has a long postmature duration only with the germination of 29.5%～37.5% after 40～70 d when its dormancy is relieved. The low limit of mean temperature for shooting is...The seed of \%Taxus chinensis \%(Pilger) Rehd.\ has a long postmature duration only with the germination of 29.5%～37.5% after 40～70 d when its dormancy is relieved. The low limit of mean temperature for shooting is 15℃, the mean height of 1\|year\|old and 2\|years\|old seedlings is 8.12 cm and 16.10 cm respectively, mean basal diameter of 2\|years\|old seedling is 0.19 cm. Soft\|wood + 50 mg/kg ABT + sandy bed in spring and hard\|wood + 100 mg/kg NAA + sandy bed in autumn are the best treatments for cutting propagation, the survival rate of afforestation may reach 100%. Their mean height is 70.48 cm, basal diameter is 1.01 cm, and branch is 40～50 cm in second year for plantation.展开更多
To predict and assess production conditions of sugarcane in Guangxi in 2016,by using methods of field survey and data collection,the seedling situation,breed structure,planting area,planting period,plant diseases and ...To predict and assess production conditions of sugarcane in Guangxi in 2016,by using methods of field survey and data collection,the seedling situation,breed structure,planting area,planting period,plant diseases and insect pests of sugarcane in six major sugarcane producing cities of Guangxi were surveyed. The results show that the overall situation of sugarcane seedlings in Guangxi in 2016 became slightly worse than that in 2015,but there were enough good sugarcane seedlings in 2016. The dead heart rate of sugarcane decreased in most sugarcane regions from 2015 to 2016,that is,the comprehensive control of borers gave initial results; the smut infection rate of sugarcane rose from 2015 to 2016 and tended to increase. The situation of decrease in the planting area of sugarcane in three consecutive years was controlled,and the planting area of sugarcane increased slightly from 2015 to 2016. Due to the construction of ' double high' bases,the breed variety of sugarcane in Guangxi was improved further in 2016. It is necessary to strengthen field management and conduct chemical weeding,prevention and control of borers and aphids in the later period in time.展开更多
文摘The seed of \%Taxus chinensis \%(Pilger) Rehd.\ has a long postmature duration only with the germination of 29.5%～37.5% after 40～70 d when its dormancy is relieved. The low limit of mean temperature for shooting is 15℃, the mean height of 1\|year\|old and 2\|years\|old seedlings is 8.12 cm and 16.10 cm respectively, mean basal diameter of 2\|years\|old seedling is 0.19 cm. Soft\|wood + 50 mg/kg ABT + sandy bed in spring and hard\|wood + 100 mg/kg NAA + sandy bed in autumn are the best treatments for cutting propagation, the survival rate of afforestation may reach 100%. Their mean height is 70.48 cm, basal diameter is 1.01 cm, and branch is 40～50 cm in second year for plantation.
基金Supported by Special Project for Basic Scientific Research of Guangxi Academy of Agricultural Sciences(2016YM03)
文摘To predict and assess production conditions of sugarcane in Guangxi in 2016,by using methods of field survey and data collection,the seedling situation,breed structure,planting area,planting period,plant diseases and insect pests of sugarcane in six major sugarcane producing cities of Guangxi were surveyed. The results show that the overall situation of sugarcane seedlings in Guangxi in 2016 became slightly worse than that in 2015,but there were enough good sugarcane seedlings in 2016. The dead heart rate of sugarcane decreased in most sugarcane regions from 2015 to 2016,that is,the comprehensive control of borers gave initial results; the smut infection rate of sugarcane rose from 2015 to 2016 and tended to increase. The situation of decrease in the planting area of sugarcane in three consecutive years was controlled,and the planting area of sugarcane increased slightly from 2015 to 2016. Due to the construction of ' double high' bases,the breed variety of sugarcane in Guangxi was improved further in 2016. It is necessary to strengthen field management and conduct chemical weeding,prevention and control of borers and aphids in the later period in time.
