| This paper studies the effects of different materials (seed coating, chitin gel, plant growth regulators, inorganic chemicals, soil) and methods (soaking, seed dressing) on seed germination and seedling emergence, and the effects of different preferred formulations on seedling emergence, growth and yield of rape. The results are as following:1. The effects of seed soaking with uniconazole on seed germination and seedling emergence of rapeseed at different temperatures:With the increase of the concentration of uniconazole, rape seed germination ra te decreased, When the uniconazole reached concentration 10mg/L, the final germi nation rate with the control (Omg/L) compared to the 30/35℃,20/25℃,10/15℃, respectively decreased by 2.1%,28.9%,97.6%, with increasing concentration of uniconazole, germination at 10/15℃ and 20/25℃ showed a decreasing trend and were reduced by 98.8% and 28.0%, while the 30/35℃ slightly higher germinati on, improved 4.8%, With the increase of the concentration of uniconazole on seed ling height stocky rates were:65.5% at10/15℃,20/25℃ was 50.9%,30/35℃ stoc ky little effect; Three different temperatures no significant effect on the root; With increasing concentration of uniconazole at 30/35℃,20/25℃,10/15℃ germination index decreased by 5.27%,47.4%,97.40%, seedling vigor index decreased by 13. 30%,33.67%,98.13%, the average number of days germination 30/35℃ is no i mpact,20/25℃ increased 0.2-1.2 d.2. The effects of different kinds of seed coating agents applied to seed dressi ng on seed germination and seedling emergenceDifferent Seed coating agents on Seed germination, seedling emergence and m orphological index greater impact.2%-tebuconazole dry seed coating agents inhibite d seed germination and emergence, the higher the concentration, the stronger the inhibition, and ultimately reduce the germination rate and seedling emergence 47%-carbosulfan, and 70%-hymexazol dry powder processing delay rape seed germ ination, germination rate and seedling emergence on the final impact is small. 2%-tebuconazole dry powder seed coating sgents and 70%-hymexazol powder for seed treatment inhibited the growth of height and root length, the greater th e concentration, the stronger the inhibition; contrast,47%-Carbosulfan emulsion promote the growth of canola seedling height and root length.3. The effects of New material chitin gel on seed germination and seedling emergence1%,3% and 5% of chitosan gel,3.5 ‰(denoted as CG1, CG2, CG3, AG3.5, AG7.0),7‰ agarose gel (AG3.5, AG7) and soil seven kinds of medium for germination test, The first day after sowing, CG2 highest germination rate, was 95% in the first two days, the germination rate was 100%, and other media germination rate less than 100; Root length:Soil> CG2> CG3> CG1; Dry weight:AG3.5> Soil> CG3> CG2> CG1, CG2 and throughout the difference was not significant; fresh weight:Soil> CG2> AG7.0> CG3> AG3.5> CG1, CG2 and soil in which no significant difference.4. The effects of different preferred formulation on seed germination and seedling emergenceUniconazol and inorganic reagents mixed use, the inhibition of germination and seedling emergence significantly weakened,5mg/L uniconazole single dose seed soaking germination rate is lower than 50%, H8 (Uniconazole+potassium permanganate +potassium nitrate+potassium dihydrogen phosphate) and H10 (ammonium+ potassium nitrate+glyphosate) germination up to 90% or more, compared with the control has no difference, H11 (ammonium+potassium nitrate+potassium dihydrogen phosphate+glyphosate) treatment Huayouza 9, germination rate and germination rate is higher than 80%.Different varieties of the same recipe on seedling emergence and Seed germination have different effects. H10 and H11 can promote 19 rapeseed varieties germination rate, H11, H6, H1 only promote a few varieties germination. Uniconazole contained on rape stocky significant effect, the control height is higher than 3cm, rapeseed varieties handle by H6 and H11 were in height between 0.8～1.5cm, without treatment of uniconazole has less effect on the germination rate and germination rate, final germination rate and seedling emergence and control non-discriminatory. Various treatments on root length was less affected.5. The effects of seed treatments using different preferable formulations on the yield of rapeseedDifferent treatments on the yield of rapeseed no obvious rule, H11 deal with Huayouza 62, economic yield per plant, biological yield per plant, economic coefficients were 17.33,50.07,0.35, respectively, compared with the control increased by 10.2%, 9.1%,2.9% percent; Processing Hua shuang 5, the economic factor increased 6.3%. H6 processing Huayouza 9, biological yield per plant, grain yield per plant, economic coefficients were 15.93,45.52,0.35, respectively, compared with the control increased by 5.8%,4.3%,2.9%(2012-2013) with the previous one in biological yield per plant, grain yield per plant, economic coefficients were 75.75,20.47,0.27, an increase compared with the control, respectively,37.3%,54.7%,12.5%(2011-2012) results. |
