摘要
早熟品种四九菜心与中熟品种60天特青菜心两个播期试验表明,早熟品种与中熟品种的生育过程略有不同,但两者鲜质量和干质量增长,叶片与叶面积都逐步增加,净同化率也逐步提高,以花薹形成期增长最多,净同化率较高;生育过程中干物质分配以叶片生长占大部分,至花茎形成时仍占一部分,菜薹占的干物质比例则逐渐增加,采收时占植株干物质的40%～50%.
The growth and flowering stalk formation of early-maturity cultivar (Sijiu Caixin) and mid-maturity cultivar (60 Tianteqingcaixin) with two sowing dates were studied. The results showed that there was a little difference in the course of growth and development between two cultivars. However the fresh and dry weight, leaf number and area, net assimilating rate (NAR) both increased gradually, the increase extent and NAR was highest at flowering-stalk formation stage. Dry matter were mostly distributed to leaf during growth and development;the percentage of dry matter distributed to flowering stalk increased gradually and reached to 40 %-50 % at harvesting stage.
出处
《中国蔬菜》
北大核心
2005年第2期12-14,共3页
China Vegetables
关键词
菜心
花茎
菜薹
中熟品种
净同化率
生育过程
早熟品种
增加
形成期
比例
Brassica campestris L. ssp. chinensis(L.)Makino var. utilis Tsen et Lee, Growth, Flowering stalk formation
