海甘蓝栽培措施的初步探讨

研究了在成都地区不同播期和播种密度对海甘蓝产量及经济性状的影响。结果表明：（１）播种至出苗和现蕾至盛花是影响全生育期长短的两个主要阶段。日均温是影响这两个阶段的主要因子。在不同播期条件下，全株粒温和千粒粒重与产量相关系数均达到极显著水平，是影响海甘蓝产量最明显的产量构成因子。在成都地区适宜的播种期为１０月初至１０月中旬。（２）１５万株／ｈｍ２能保持较高的叶面积系数，降低发病率，产量较高，是较为合适的种植密度。

PRELIMINARY STUDY ON CULTIZATION MEASURES OF CRAMBE ABYSSINICA

Influence of different sowing date and density on the yield and economic characters of C.abyssinica in Chengdu area was studied.The results were as follows;(1)Thewhole growing period was chiefly influencde by two stages:from sowing to seedling and from bud to blloming.In these two stages,the daily mean temperature was essential.Oneondition of different sowing dates,the correlation coefficient of grains of single plant and 1000 grain weight to yield was both significant at 1%leevel.Sograins of single plant and 1000 grain weight were key factors affecting th yield of C ,abyssinica.The sowing date of C.abyssinica in Chengdu area could be preliminarily determinated:form the begining ofOctober to mid-Octobher.(2)The density experiment indicated that 150.000 plant /hm2 could keep higher LAI and decrease the percentage of diseases,and higher yield could be obtained.Therefore,we suggested that 150.000plant /hm2 in Chendu area was more suitable.