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柠条种子丸粒化配方的筛选(PDF)

《南京林业大学学报(自然科学版)》[ISSN:1000-2006/CN:32-1161/S]

Issue:
2019年05期
Page:
9-15
Column:
研究论文
publishdate:
2019-09-20

Article Info:/Info

Title:
Screening of pellet formulas for Caragana korshinskii Kom. Seeds
Article ID:
1000-2006(2019)05-0009-07
Author(s):
YANG Lifang1 GAO Handong1* GU Meiying2 DU Haibo2 LIU Xiaohui2 SU Lin2
(1. Southern Tree Seed Inspection Center, State Forestry and Grassland Administration, Nanjing Forestry University, Nanjing 210037, China; 2. Baicheng City Forestry Research Institute of Jilin Province, Baicheng 137000, China)
Keywords:
Caragana korshinskii Kom. seed pelleting formulation germination percentage splitting rate water holding capacity
Classification number :
S722.1+4
DOI:
10.3969/j.issn.1000-2006.201808023
Document Code:
A
Abstract:
【Objective】 Several superior pellet formulas for Caragana korshinskii Kom. seeds were compared and screened with the aim of improving precision seeding, field germination rate and seedling growth. The aim of this study was to promote afforestation on difficult lands in arid and semiarid regions and to provide a theoretical basis for the research and application of forestation and weed seed pelleting.【Method】Combinations of different adhesives, fillers and superabsorbent polymers(SAPs, mass ratio is 0,3%,5%,7%)were applied to pellet C. korshinskii Kom. seeds(Forestry and Grassland Bureau of Inner Mongolia Autonomous Region). Adhesives included sodium carboxymethyl cellulose A(A1: 0.75%; A2: 1.0%; A3: 1.25%; and A4: 1.5%)and polyvinyl alcohol B(B1: 2%; B2: 4%; B3: 6%; B4: 8%). Fillers included C1 [20%(volume ratio, same below)clay + 40% talc + 40% kaolin], C2(40% clay + 30% talc + 30% kaolin), C3(60% clay + 20% talc + 20% kaolin), C4(80% clay + 10% talc + 10% kaolin), D1(40% clay + 60% talc), D2(60% clay + 40% talc), D3(80% clay + 20% talc)and D4(100% clay). We evaluated the effects of the pellet formulas on the quality of pelleted seeds, splitting rate, water-holding capacity, seed activity, and growth of germinated pelleted seeds. Then, the optimum pellet formulas for C. korshinskii seeds were selected. 【Result】The optimum pellet formulas following the primary screening were A3C3(germination percentage: 88.7%; vigor index: 33.8; and fresh weight: 7.2 g), B1C4(germination percentage: 86.7%; germination index: 20.1; vigor index: 32.3; and fresh weight: 10.9 g), A2D3(germination percentage: 89.0%; germination index: 19.7; vigor index: 29.4; and fresh weight: 10.5 g), and B1D1(vigor index: 28.9 and fresh weight: 9.8 g). After adding SAP based on the primary screening, the optimum pellet formulas were M4(A3C3 + 7% SAP)with an average germination percentage of 91.0%, germination index of 22.5, vigor index of 35.9, and fresh weight of 4.9 g; M7(B1C4 + 5% SAP)with an average germination percentage of 90.3%, germination index of 21.9, vigor index of 36.0, and fresh weight of 4.8 g; and M11(A2D3 + 5% SAP)with an average germination percentage of 92.7%, germination index of 22.7, vigor index of 37.4, and fresh weight of 4.8 g. 【Conclusion】 Based on the germination percentage, germination index, vigor index, fresh weight, and water-holding capacity as well as pellet appearance and splitting rate, the optimum pellet formulas were selected to improve the precision seeding, field germination rate, and seedling growth of C. korshinskii Kom. seeds.

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Last Update: 2019-10-08