Study on introduction of asparagus in saline-alkali land in Heilongjiang province
There is 180,000 hm2 of saline-alkali land in Heilongjiang province in northeast China and the cool climate is suitable for the growth of asparagus. A few cultivars such as UC800 and Mary Washington had been introduced in these areas during the past 10-15 years, but few were successful cultivated because of lack of technical guidance. Screening suitable cultivars to make good use of the saline-alkali land is of great importance. For this research, 15 cultivars of asparagus (Jinglv1, Jingziyu, Jinglv1034, Jinglv1039, Jinglv1103, Apollo F1, NJ977, Pacific 2000, Jersey Knight, Grande F1, Jinggang701, Jingganghong, TC2010, 096, 086) were evaluated in saline-alkali land in Heilongjiang province with Jinglv1 used as the control. Previous research showed that fertility index and yield of asparagus were positively correlated and fertility index can predict the production trend of superior strains. Individual fertility index is the product of stem number, stem diameter, and stem height. Correlation analysis between fertility index, dry and fresh weight of each cultivar were studied for three consecutive years. The results showed that fertility index, dry and fresh weight of Jinglv1103, Pacific 2000, Grande F1 and 096 were significantly higher than other cultivars. Fertility index is mainly related to stem number with a correlation coefficient of 0.82 between them. Jersey Knight, Jinglv1034, Apollo F1 and NJ977 are sensitive to saline-alkali land.
Li, Caihua and Wang, Mingming (2020). Study on introduction of asparagus in saline-alkali land in Heilongjiang province. Acta Hortic. 1301, 123-126
asparagus, introduction test, fertility index, fresh weight, dry weight