Study On Varieties Selection During The Summer And Fall And Key Cultivation Technology For Flowering Chinese Cabbages In Greenhouse In Hainan

Flowering Chinese cabbage(Brassica campestris L.SSP.Chinensis(l.)Makino var.Utilis Tsen et Lee)belongs to Brassica cabbage.Because of its rich in Vc,Fe,Mn,zinc and other elements,unique flavor and taste crisp,it was very popular.In recent years,Flowering Chinese Vegetables has increasingly become the fresh leaves of Hainan people's favorite food.Hainan currently use more cabbage cultivation originated in Guangdong cabbage varieties,such as Lin Zhongmin cabbage,cabbage 777 etc...Because of years of cultivation,the varieties of vegetables in a different degree of degradation,and increasingly cannot meet the market demand for vegetables production and quality.In addition,Hainan vegetables cultivation,often meet with high temperature and rainy weather,extensively existing cultivation techniques,the vegetables are in short supply,prices have climbed.Based on this,this study aims to screen for summer and fall sun-shade net greenhouse greenhouses planting varieties of vegetables planting and late autumn,and study the matching of the sun-shade net greenhouse planting technology,including greenhouses of land utilization,cultivation methods,applying organic fertilizer types and content,etc.Think Hainan vegetables in off-season cultivation to provide technical reference.The results of the study are as follows:(1)Screening of the 18 varieties of Flowering Chinese vegetables,the yield of 60 days green oil sweet vegetables,sweet New Zealand Ba state oil for 60 days,sweet golden boat leaves oil vegetables yield,and yellow leaves of 49-19 49-19 vegetables ware significantly higher than control,increase production rate of 45%,37.73%,30.03%and 34.59%,respectively,on the other hand,now 'Guangfu'green vegetables for cultivation in Hainan,the yield of greater than 60 days oil pure green vegetables is significantly different than 'guang fu' green vegetables.And the yields of 'Sweet oil 25' green vegetables,'yellow 49-19 vegetables','Hainan 49 vegetables','sweet golden boat leaves oil vegetables '','New Zealand Padre Island 60 days cabbage' are more than 'guangfu' green cabbage.But there was no significant difference.The rest of cabbage productions are less than 'guangfu' green cabbage.here fore,from the viewpoint of yield,screened varieties of green cabbage 60 days clear oil beet heart,New Zealand 60 days loquat Chau sweet oil,gold boat tip Yeyou Qing beet heart,yellow leaves forty-nine-19 cabbage,sweet green oil 25 Chinese cabbage,cabbage 49 Hainan.From the quality aspect of the analysis,only Cantonese Chinese cabbage,cabbage youth vitamin C,soluble protein content was significantly higher than No.49-19 cabbage.Therefore,from the aspect of quality screened cabbage varieties 'guangfu' green cabbage,'qingchun' cabbage.(2)Screening of 28 Flowering cabbage varieties in autumn,with the production point of view,Cantonese cabbage,Lin Zhongmin super fast hybrid dishes heart,the heart of Hong Kong late cauliflower,cabbage hybrid Guangfu four varieties of production are significantly higher than the control number 49-19 cabbage.But only in Cantonese cabbage chlorophyll,vitamin C,soluble sugar and soluble protein content was significantly higher than the control,the control 49-19 cabbage yield,vitamin C,soluble sugar,cellulose content are high.Therefore,yield and quality point of view,screened cabbage varieties Cantonese Chinese cabbage,cabbage 49-19.From the quality point of view,only the lancet crude oil chlorophyll clear heart beet strips,soluble solids content was significantly higher than the control,vitamin C,soluble sugar content showed no significant difference.So we screened bolting cabbage varieties Cantonese cabbage,willow thick strips clear oil beet heart,49-19 cabbage.(3)In botanical traits,plant height,plant width,stem diameter,economic yield per plant,biological yield of transplanting cabbage were significantly higher than drilling and spreaders.In intrinsic traits,the soluble sugar,soluble protein content of transplanting cabbage was very significantly higher than the cabbage drill with sowing,the content of vitamin C and cellulose were significantly higher drilling and sowing cabbage.There was no significant difference between biological yields in three planting methods,but the economic yield of transplanting cabbage was significantly higher than the drill and sowing cabbage yield.Compared the type of six ridge 'Wugou',four ridge 'Wugou' and five ridge four 'gou' the type manner,the result is proved that the ridge four groove-type ridge ditch way to reduce the footprint of land utilization rate of 81.86%,and the biological yield significantly higher than four ridge Wugou type of biomass production,economic output significantly higher than the six-channel type ridge five,four ridge Wugou type of economic output.In summary,you can use the tyle five ridge four groove and transplanting greenhouse cultivation formula.(4)4 kinds of fertilizer and six gradient under the processing of vegetables,plant height,leaf width,which weight per plant,area yield were significantly higher ofA2B2 processing vegetables than that of CK,plant height,leaf width,leaf length,which weight per plant ofA1B1 processing vegetables are no significant difference with A2B2.But the yield of A2B2's cabbage is significantly higher than that of A1B1.And A1B1,A2B2 botany indexes are better than other processing.The content of soluble sugar,soluble protein,vitamin C,fiber of A2B2 processing vegetables is significantly higher than that of CK.Other processing,on the whole,inferior to A2B2.From the effect on the yield and quality of the cabbage,screened fertilizers is coco peat organic fertilizer with 15 t/ha for planting cabbage.