Research Of Salvia Miltiorrhiza Seedling Stage Growth Characteristic And Strong Sprout Raise Measure

This research chose salvia miltiorrhiza as material,using field experiment and lab analyse in detail, combined with conducted salvia miltiorrhiza seedling stage growth characteristics and seedling cultivation measures. research conclusions are as follows:1. In a conventional salvia miltiorrhiza about one point five gram seed's weight of a thousand seeds around, seeds with 20-30 degrees Celsius temperature between the best condition, ShaRangTu seeds in the germination rate and potential are higher than the of clay.2. observation and analysis of seedling Cotyledons develop and decline. cotyledons during the three different periods of breeding about 20 days to reach maximum cotyledon area, (T)7.12 as the highest, after 20 days cotyledons functions began to fall;Observe from the cotyledons growth cycle, (T) 6.30 is the longest period of growth of cotyledons, more than 40 days.3. Observation and analysis on seedling leaves, salvia miltiorrhiza seedlings to nine to ten really leaves began to appear a handle handle three leaves, then bengan to form a handle handle five,seven leaves, leaf area increased significantly photosynthesis increased too, three different period breedings chloroplast pigments content probably is (T) 7.12> (T)6.30>(T)7.29, as the organic biosynthesis pigments, as the organic biosynthesis pigments, amount shall be positive correlation with organic biosynthesis, this same with the strong seedling index and dry weight.This before grade four the root system has basically formed (thick level gradually began to root). (T) 7.12 seedling more and earlier than(T)6.30 and more than (T) 7.29, from leaf number, or the time appear a handle more leaves, salvia miltiorrhiza best strong seedling breeding time in mid-july.4. Salvia miltiorrhiza breeding in summer, seedling emergence in about five days.5. Observation and analysis of seedling root. (T)6.30, on Jul.9(10days) strong seedling cotyledons long 0.6-0.9 cm, heart-shaped, taproot long 2.2cm, fibrous root have 3-5 bars, plant height0.9 cm, stem diameter 0.1cm; on Jul.13, the three and four real leaves smaller as needlepoint, root grade 3 began to generate, on Aug.8 root grade 4 generate (less), appear to from grade 3 to 4 the time interval longer, (T2) 7.12 seed germination and uniform relatively quicker than (T1)6.30 overall impression, on Jul.21(10days) out together to strong seedling,cotyledons long 0.85-0.9 cm, taproot long 2.6cm, fibrous root have 5-10 bars, plant height0.975 cm, stem diameter 0.1cm;(T)7.29 emerges obvious more slowly than in (T)6.30 and the (T)7.12, 8.7 (10 days), real leaves smaller as needle-tip, but also had not achieved 100% emerge, this time the root system longitudinal growth is obvious, the main root long achieved approximately 2.8 cm, fibrous root 3-6 root shapes break out approximately, high 0.8cm; Obviously the (T)7.29 seedling's root system this time displays for the longitudinal growth superiority is bigger than crosswise, the root growth quicker than leaves growth, this should be concerns with the ground temperature. comprehensive seedling root of observation and analysis, can have tht first real leaf from the emergence the fibrous root began as the growth. from the root of the number-size or support functions to compare, salvia miltiorrhiza seedlings that can be recognized before grade 4 root are main, from grade 3 to 4 time interval longer than the from 2 to 3,by light and temperature comprehensive factors, the following root grade appear the interval are longer.6. With the best period of the best seedling transplanting corresponding. Salvia miltiorrhiza in October-November the best autumn transplanting time, (T)6.30 and (T)6.30 seedling index have a processing decline at different level, (T)7.29 due to late seedling so seedling index basically unchanged, but obviously (T) 7.12 seedling index higher than the former(T)6.30 and the latter(T)7.29, and combined with trial plot of the meteorological data, the best strong seedling index seedling transplanting should was in 0.13-0.15 range.7. Different times and different shade, different seed-using quantity and different fertilization effect of salvia miltiorrhiza strong seedling cultivation obviously, comprehensive comparison of all deal-with seedling indexs to handle (T)7.12 is the best, and the optimum about 25-30 million seedlings per mu ultimately.8.The chlorophyll content and the root vigor determination and the observation, from at the beginning of August chlorophyll content continuously is increasing to the late August, process in September a minute continually increase, the chlorophyll content achieves the peak value in October 19, on November 8 had the great degree to drop.the root vigor is transplanting best in October 19 and on November 8 two time changes is not big, but has the drop slightly.