CAJ | 학술논문

为提高沿淮洼地农业经济与生态效益,探讨农业结构优化评价标准与量化指标.首先对沿淮洼地农业生态条件、农牧业结构及其相互链接现状进行了分析;提出用单位耕地年产可消化生物量(DBYHY)作为评价标准,论述以其优化种养结构,促进秸秆饲用化、牧草与饲料作物生产以及评价粮食安全的科学性.探讨以总消化养分校对值(TDNc)作为筛选、建立DBYHY生产模型的量化指标,得出在沿淮洼地不同种植模式下TDNc数值排序为:水花生＞稻-黑麦草轮播＞紫花苜蓿单播＞2/5 黑麦草+3/5苜蓿混播＞稻-麦轮播＞稻-油轮播＞玉米-油轮播;一季的花生＞水稻＞油菜.
위제고연회와지농업경제여생태효익,탐토농업결구우화평개표준여양화지표.수선대연회와지농업생태조건、농목업결구급기상호련접현상진행료분석;제출용단위경지년산가소화생물량(DBYHY)작위평개표준,논술이기우화충양결구,촉진갈간사용화、목초여사료작물생산이급평개양식안전적과학성.탐토이총소화양분교대치(TDNc)작위사선、건립DBYHY생산모형적양화지표,득출재연회와지불동충식모식하TDNc수치배서위:수화생＞도-흑맥초륜파＞자화목숙단파＞2/5 흑맥초+3/5목숙혼파＞도-맥륜파＞도-유륜파＞옥미-유륜파;일계적화생＞수도＞유채.
To improve agricultural economic benefits and eco-efficiency in low-lying land along the River Huai, the evaluating quantitative indexes in agri-structure optimization were investigated. The agriculture ecosystem and agri-structure actuality in the region were analyzed first. The new term "Digestible Bio-mass Yield per Hectare per Year" (DBYHY) is given as an evaluation index and the scientific value of DBYHY to agri-structure optimization,farm straw feeding,forage grass production and food security ensuring is discussed. For the first time, the correct Total Digestible Nutrients (TDNc) formula was found together with its value for estimating the DBYHY. The size of the TDNc value in the region decreases from floatgrass to rice-rye, alfalfa, 2/5 rye+3/5 alfalfa, rice-wheat, rice-rape, corn-rape, peanut, rice and rape.