The Study Of Fine Herbage Introduction And Agricultural Three Meta Structure Pattern In Jilin Province Farming Area

By the study of breeds introduced and agricultural three meta structure pattern fitting for farmland environment in jilin province ,it offers rationale for realizing science and high performance agriculture .Nine clover patterns such as M. sativa cv Zhaodong,M. sativa, Medicago sativa, M. sativa cv.Russian, Astragalus adsurgens, Melilotus albus, Bromus inermis cv. Leyss, Rumex patientia R.tianschanicus and Amaranthus hybridus were introduced to do experiments from the year 2000 to 2004 Meanwhile ,two bean species and two corn species were regarded as control varieties, six varieties of local crops such as common corn, economical corn , bean, yellow tabacum, chestnut, broom corn were combined with them to do the experiment of agricultural three meta structure pattern.The results indicate : the functionof Bromus inermis cv. Leyss . to return green is the best , Astragalus adsurgens's is the worst ; sativa grows steadily each year but Astragalus adsurgens grows most quickly ; Astragalus adsurgens has the highest accumulated quantity of hay production to 21708kg/hm~2, Rumex patientia R.tianschanicus's is the lowest to 7260kg/hm~2 ; the CP level of sativa is the highest which is averagely 19.96%. and the lowest level is the annual Amaranthus hybridus to 7.80% . The experimented clover is a good forage resource to develop animal husbandry which contains redundant vitamin, mineral matter, minor element and high nutrition quality .The finding shows five varieties species which include perennate Medicago sativa , Bromus inermis cv. Leyss. , Astragalus adsurgens, Melilotus albus, and annual Amaranthus hybridus have high production, good quality, high growth and are fitting for planted in farm-field of jilin province .Although M. sativa cv. Russian, M. sativa cv Zhaodong, M. sativa planted species are fitting for planted in jilin province ,the production and nutrition quality of clover are worse than Medicago sativa. .Otherwise they are not fit for introduced because of Rumex patientia Ktianschanicusshowing bad .The study results of agricultural three meta structure patterns experimental indicated: the retrocrops of the Six kind of pulse family clover have good growing tend, remarkably increasing production and its synthetic level is higher than control groups . M. sativa make the production of economical corn increased by 25.8%; Medicago sativa make the production of chestnut increased by 43.9%, The M. sativa cv.Russian make the production of broomcorn increased by 27.2% and yellow tobacum increased by 15.2%, Astragalus adsurgens make the production of common corn increased by 40.7%; the retrocrops of the Bromus inermis cv. Leyss grow equally and have no effects to increased production . Rwnex patientia RManschanicus and Amaranthus hybridus result in the output of retrocrop decreased .The organic matter, quick result N ,quick result P, quick result K and volume weight of the Six kind of pulse family clover are propitious to fertile soil and improve the quality of soil. -Although the rising extent each year of soil nutrition is not as good as the compared bean , they have high output ,good quality and are suitable to continuous cropping.. The aggregate-value of soil nutrition in three years is still higher than that of bean . Rumexpatientia R.tianschanicus and Amaranthus hybridus have bad effects to soil fertility and quality because of wasting much soli nutrition .In this study, the best agricultural three meta structure of fitting for the physical environment in jilin province .is that: Medicago sativa three year-annual chestnut-annual broom corn; Astragalus adsurgens three year -annual normal corn -annual broom corn ; Melilotus albus two year -annual economic corn -annual broom com -annual chestnut.Otherwise, it can get better economic returns by properly inserting economic crop such as flavotabacum .This study has important significance to introducing clover n developing clover > relieving the contradict between people and soil -. relieving the contradict between clover and animal x improving ecological environment and regulating planting structure .