The Study On Cultivation Mechanism Of Overgrown Snap Bean In Early Spring Greenhouse

In this paper,be aimed at the actualities and problems of snap bean cultural in early springgreehnouse,the culutral mechanism effects which touched the yields and the quality wasanalysed systematically.The technique system of high yield and quality was defined which fittedthe native area.In this paper,these experiment were carried out as follows,the comparison among thegeneration period,shape of plnat,yield,quality and resistance capacity to disease of tenovergrown snap beans as jiuyueqing, jiangjunyidianhong, jifengxiaoyoudou, jiangdongkuan,jinongyoudou, jiujiadou No.10, baiyunfeng, yuanfeng907, huangjingou, taiguojiaodu werestudied.Using jiuyueqing and jiangjunyidianhong as the material,the different planting densityand nitrogen levels,different age of grow seedlings were studied.Identified the influence ofdifferent planting density on plant groups and yield,the influence of nitrogen level on yields andquality, and he influence of different grow seedlings age on shape of plnat,seedlingsquality,seedlings productivity.The results show that the suitable cultivars for the native area was jiuyuqing andjiangjunyidianhong by the characteristic of premature,high yeild,strong resistance capacity,economy advantage,adapted to the temperature in early spring,adapted to the custom ofconsumed.The plants had well growth,strong phptpsynthesis and high yield when the plantingdensity was129,000/hm2,so129,000/hm2was the reasonable planting density. Increased16kgpure nitrogen on the basis of the original fertility was the most appropriate.The chlorophyllcontent was the highest,nitrate reductase activity was strong, yield was high and the nutritionquality was good under this condition. The most seedling period was30days,and the strongindex was better, the early and total yield was higer.