Research On Seed Coating Of Four Pasture Seeds

The ecologically fragile areas and pastoral areas of China mostly in thenorth-west and north arid, semi-arid regions, rainfall is below 300mm, as partof our climate change in recent years and high intensity of the impact ofhuman activity make parts of surface vegetation and soil by natural andman-made varying degrees of damage, which result in the gradualdesertification and soil degradation in those areas. Thus, in such areas topromote pasture seed coated technology to improve the area of soildegradation and desertification have important significance. Pasture seedcoated technology is seed coating for raw materials to strains for the carrier,using mechanical or manual seed dressing, seed coating in seed form ahomogeneous surface of clothing is a promotion of crop growth, increaseproduction, consumption and saving seeds of a lower cost of production ofseed processing integrated technology. The use of simulated droughtconditions in the laboratory seed plants pasture seed -coated methods, the useof technology to deal with ground Mcdicago sativa, Astragalus adsurgens,Leymus chinensis and Elymus trachycaulus Goulex four pasture grass anddrape alkali soil water content in the sandy soil, sprout lower, the study usingdifferent materials seed coating, more use of technology to deal with the fourseed coated pasture adaptability to drought conditions, the ultimate differentpasture seeds are suitable seed coating formula. Observing four pasture seedcoated processing rate of seedlings emergence shows : with absorbent agentscontent increase the processing rate of seedlings emergence seed coatedpasture a linear increase in growth is more vigorous seedlings. The reason isbecause there is drought-fighting water absorbent agent effectiveness topasture seed coated germinate and grow with moisture, plants increase theefficient use of water, seeds around in a "small molecule reservoirs." Thereforeabsorbent content gradient increase the rate of seedlings emergence of fourpasture seed coated significantly. Data derived from testing 2%,5%,8%,10%absorbent agent for the content of the substantial growth rate of seedlingsemergence seed coated, the highest growth rate could reach 50.0%, while seedcoating to join absorbent agents seed coated in comparison with the rate ofseedlings emergence has increased because of diatomite played absorbent. Thechoice of diatomite to fill, has not yet been found in any reported. I study theimpact of seed rate of seedlings emergence coated filled by diatomite.Research indicates that using diatomite to fill seed coated and contrastcompared emerge ahead of schedule, rate of seedlings emergence hasincreased. Because diatomite shell wall is rich pore, can absorb moisture ownquality 2~4 times. This is the unique nature of diatomite with absorbent agentsconstitute a double water, and enhance the capacity seed coated drought. JilinProvince is the main producing areas as diatomite, higher reserves, but cheapprices, reduced seed coated. Absorbent increased use of drought-fighting watereffects seed coated for pasture seed coated can germinate in the droughtconditions of normal growth and provides protection. Test results show thatthe greater the content absorbent, pasture seed coated germinate rate is higher,seedlings grow relatively brisk. The content of absorbent agents gradient of thegrowth rate of seedlings emergence of four pasture seed coated have markedlyimproved compared with the comparison. Flowered Mcdicago sativa seed inthe rate of seedlings emergence 60%, by adding absorbent after bloomingMcdicago sativa seed rate of seedlings emergence reached 90%, an increase of50%;Astragalus adsurgens seeds rate of seedlings emergence of 64% byadding absorbent after blooming Astragalus adsurgens seed rate of seedlingsemergence reached 88%, an increase of 37.5%. The results showed bloomingMcdicago sativa and Astragalus adsurgens seed at processing rate of seedlingsemergence significantly improved on both pasture suitable for the sandy soil,sprout in water content and low growth, drought ability. Leymus chinensisseed in the rate of seedlings emergence as 26%, after joining absorbent seedcoated blooming Leymus chinensis seed rate of seedlings emergence reached34%, an increase of 30.8%;Elymus trachycaulus Goulex seed in the rate ofseedlings emergence as 34%, after joining absorbent seed coated bloomingElymus trachycaulus Goulex seed rate of seedlings emergence reached 44%,an increase of 29.4%. The results showed that Leymus chinensis and Elymustrachycaulus Goulex seed contrast or seed coated processed in the sandy soil,the soil moisture content lower rate of seedlings emergence low on bothpasture in drought conditions to improve the capacity of the soil every weak.The four pasture seeds for the seed coating research, and eventually to beused in practice, so seed coating formula must consider the rate of seedlingsemergence seed coated, but also to consider its practical application in the cost,the ultimate goal is to improve pasture production, consumption savingspasture seed, the greatest economic returns. Hence, absorbent in seed coateddrought-fighting water play a key role in the process, although absorbentcontent higher absorbent, the rate of seedlings emergence seed coated higherrate of seedlings emergence and economic benefits from the twoconsiderations, absorbent usage is not the higher the better. FloweredMcdicago sativa seed coated formula absorbent agents to choose the bestcontent in the context of 4%-6%;Astragalus adsurgens seeds and sand to theseed coated formula absorbent to choose the best content in the context of2%-3%;Leymus chinensis seed coated formula absorbent in the context ofchoice 4%-6% best;Elymus trachycaulus Goulex seed coated formulaabsorbent agents in the context of choice 2%-3% best. Through the study ofthe four pasture seed coated in this experiments, the formula chosen to followtwo principles adhesives agents, the first is cheap price. Because in theformula, adhesives agents content smaller, the impact of cost is not significant,so we should choose the cheapest adhesives materials. The second is to choose5% margin of the adhesives agent concentration. Because the concentration ofhigh adhesives, seed coated is tight on the high degrees, the loss can bereduced in planting process to improve rate of seedlings emergence. cost, theultimate goal is to improve pasture production, consumption savings pastureseed, the greatest economic returns. Hence, absorbent in seed coateddrought-fighting water play a key role in the process, although absorbentcontent higher absorbent, the rate of seedlings emergence seed coated higherrate of seedlings emergence and economic benefits from the twoconsiderations, absorbent usage is not the higher the better. FloweredMcdicago sativa seed coated formula absorbent agents to choose the bestcontent in the context of 4%-6%;Astragalus adsurgens seeds and sand to theseed coated formula absorbent to choose the best content in the context of2%-3%;Leymus chinensis seed coated formula absorbent in the context ofchoice 4%-6% best;Elymus trachycaulus Goulex seed coated formulaabsorbent in the context of choice 2%-3% best. Through the study of the fourpasture seed coated in this experiments, the formula chosen to follow twoprinciples adhesives agents, the first is cheap price. Because in the formula,adhesives agents content smaller, the impact of cost is not significant, so weshould choose the cheapest adhesives materials. The second is to choose 5%margin of the adhesives agent concentration. Because the concentration ofhigh adhesives, seed coated is tight on the high degrees, the loss can bereduced in planting process to improve rate of seedlings emergence.