摘要
系统研究了麦收后夏直播地膜覆盖花生在３０万株／ｈｍ２密度下６０００ｋｇ／ｈｍ２产量水平的植株干物质生产和产量形成的规律。植株干物重和荚果干重动态可拟合成Ｌｏｇｉｓｔｉｃ方程。植株干物重最快增长期为出苗后４３～５１ｄ，最大生长速率０．７６８ｇ／（株·ｄ），最终生物量４０．８６ｇ／株。植株干物质积累量，结荚期占６４．６％，饱果成熟期占１２％。荚果干重最快增长期是出苗后７２～８１ｄ，幼果形成后３６～４５ｄ，最大增长速率０．８６７ｇ／（株·ｄ）。荚果干重增长量，结荚期占６６．４％，饱果成熟期占３３．４％。经济系数０．６。分配系数结荚期０．６２５，饱果成熟期１．７０７，产量形成期平均０．７９５。与春花生相比，生育前期叶面积发展快，干物质积累速度高。生育后期分配系数显著高于春花生。干物质和荚果产量主要在结荚期形成。
A series of experiments on summer sowing groundnut (Arachis hypogaea L.) with plasticfilmcovered cultivation sown directly after winter wheat harvesting (SGSD) was conducted on irrigated land in Shandong, China. An average pod yield over 6 t/ha was achieved, with a plant population of 30 plants/m2. The cumulative dynamics of mass of dry matter was simulated by a Logistic equation, with the peak (0.768g/plant·d) of growth rate occurring at 43～51 day after emergence (DAE) and final mass was 40.86g/plant·d. The growth rate of dry pod mass had a peak of 0.867g/plant at 72～78 DAE or 36～45 day afterpodsetting. The pod yielding of 66.4% was formed at podsetting phase, and of 33.6% at pod mature phase. During the yield formation phase, about 79.5% of the total dry mass was partitoned to the pods. This paper laid down a plan about optimal growth and development parameters for achieving high yield in SGSD(above 6t/ha).
出处
《中国油料作物学报》
CAS
CSCD
北大核心
1998年第2期43-47,共5页
Chinese Journal of Oil Crop Sciences
基金
山东省科技重点项目
关键词
花生
覆膜栽培
生育规律
干物质积累动态
高产
Groundnut Summer sowing groundnut Plasticfilmcovered cultivation Growth and development Highyielding
