Study On Pelleting Seed Of Poa Crymophila And Festuca Sinensis

According to grass seed germination and growth of"Black beach soil"degraded grassland governance in the region of the sources of the Yangtze, Yellow and Lantsang Rivers and the pelleting seed technology research, the paper was studied on Poa crymophila Keng CV.Qinghai and Festuca sinensis Keng CV.Qinghai Selected as an objective to study the effects of different content of shrub meadow soil, different concentrations of super absorbent product (SAP) on disintegrating time, the compressive strength and germination rate of two grass pelleting seed as well as the effects adding the fertilizers'content on grass pelleting seed, and the formulas of two grass pelleting seeds were determined, which could be suitable for seed germination and growth, and had a low cost, high efficiency, simple operation, better application, and other characteristics. At the same time, the two grass pelleting seeds were studied by the drought resistance experiment, and the most appropriate planting ways of two pelleting seeds were studied by cultivation experiment. The results were as follows:1. The composition ratios of the formulas of Poa crymophila Keng CV.Qinghai and Festuca sinensis Keng CV.Qinghai pelleting seed were determined:the content of shrub meadow soil was 45%, the content of clay soil and chestnut soil were 22.5%, and the concentration of super absorbent product (SAP) was 0.5%, the content of fertilizer was 0.675%, other ingredients for a fixed ratio in Poa crymophila Keng CV.Qinghai pelleting seed. In Festuca sinensis Keng CV.Qinghai pelleting seed, the content of shrub meadow soil was 49.5%, the content of clay soil and chestnut soil were 20.25%, and the concentration of super absorbent product (SAP) was 0.5%, the content of fertilizer was 0.675%, other ingredients for a fixed ratio.2. In the drought experiment, considering the indicators of plant relative growth rate, praline content in leaves and relative water contents of leaves of Poa crymophila Keng CV.Qinghai and Festuca sinensis Keng CV.Qinghai in three tests, by which the order of seeds drought resistance of Poa crymophila Keng CV.Qinghai and Festuca sinensis Keng CV.Qinghai in three tests were determined that the addition of SAP pelleting seed>bare seed>without SAP pelleting seeds respectively.3. The same altitudes and different planting ways which had significant effects on the germination emergence few and germination rate of pelleting seed (P<0.05), and the highest was the pelleting seed by plow cultivated, light harrow as followed, the control group (the nude seeds sowed by conventional way) as followed, and the last was pelleting seed by directly sowed. And different planting way had no effect on plant height, root length, number of leaves and tillers, fresh and dry weight of seedlings, root dry and fresh weight.4. Growing at different altitudes regions, the lower the altitude, the better seed germination and growth were. The germination emergence few and germination rate of pelleting seed by plow cultivated, light harrow and directly sowed than that of the control group, and the germination emergence few and germination rate of pelleting seed planted in Xining and in Tongde by plow cultivated and light harrow were better than that of the control group. Compared with the control group, the germination emergence few and growth of pelleting seeds planted in Guoluo area by three plow ways were better, and the seed growth planted in the beach was better than that of planted in the slope. After pelleted handling of Poa crymophila Keng CV.Qinghai and Festuca Sinensis Keng CV.Qinghai seed, the germination rate of pelleting seed by light harrow, plow cultivation ways were higher than that of the control group.This study showed that Poa crymophila Keng CV.Qinghai and Festuca sinensis Keng CV.Qinghai pelleting seed had significant cultivation effects compared with the bare seed in the restoration of governance"Black beach soil"of in the region of the source of the Yangtze, Yellow and Lantsang Rivers. And it was proposed that the pelleting seed should be planted by light harrow way in the restoration of governance"Black beach soil"of in the region of the source of the Yangtze, Yellow and Lantsang Rivers.