Studies on Simplified Nutrition Management in Soilless Culture of Cucumber ‘Sia Di’ (Cucumis sativus L.) Growth and Development

• Main Authors: Hui-Wen Chan, 詹惠雯
• Other Authors: 李文汕
• Format: Others
• Language: zh-TW
• Published: 2006
• Online Access: http://ndltd.ncl.edu.tw/handle/93919664202014961272

碩士 === 國立中興大學 === 園藝學系所 === 94 === This is an initial study of simplified nutrition management by detecting available Ca and P after adding two kinds of calcium fertilizers, calcium carbonate and dolomite, and three kinds of phosphate fertilizers, guano, phosphate rock, and meat bone dust into the media. Hopefully, to improve the complexity of making nutrition to achieve the possibility of simplified nutrition management by adding only N and K to this simplified nutrition in planting cucumber ‘Sia Di’. Adding 0, 1.5, 3.0, and 4.5 g/L of calcium carbonate or dolomite to the media by drip irrigation or maintenance wetness incubation. In early stage of incubation, pH value was increased and the value was increase proportional as quantity was increased. However, if the adding quantity was above 3.0 g/L, increasing capability slow down or even not increased. Calcium carbonate was better in acid-neutralizing capacity than that of dolomite. Available Ca is high and effect was similar in two kinds of calcium fertilizers. As supplying quantity increased, concentration of available Ca increased. The effect of pH value was highest on phosphate rock, following by guano, and lowest on meat bone dust when adding different kind and quantity of P fertilizers to the media. Adjusting the pH value between 6 to 7, three phosphate fertilizers all provide available P and increased as the input quantity was increased and was highest on phosphate rock and lowest on meat bone dust. Using simplified nutrition culture cucumber after adjusting the pH value by lime and adding phosphate fertilizer in the media, all of the media EC value increased during the cultivation period. As the cultivation period lengthened, media pH of treated was lower than that of the control. Besides, nutriculture with N 175 ppm, EC value of all treatment decreased, pH value of treatment set decrease slower than that of the control set. 0.5 g/L lime could adjust the media pH between 6.0 to 6.5. The acid-neutralizing capacity of calcium carbonate is higher than that of dolomite, however, no significant difference. During cultivation period, available Ca in the media did not significantly increase or decrease. Using single or mixed 0.9-1.0 g/L total weight of phosphate rock, guano, and meat bone dust, could provide sufficient for cucumber growth. However, the quantity of available P in the media decreased during cultivation period. Phosphate rock or guano could also provide available Ca and increase pH value, however, the effectiveness is less than lime. Nutrition absorbability capability of cucumber and available concentration of P, Ca and Mg in media was affected by pH value decrease. P and Mg concentration of leaves of cucumber went low, but all elements are in suitable range. In 175ppm N simplified nutriculture set, element of leaves are all in suitable range, and N concentration of leaves reduced and P and Mg concentration increased in comparison with those in 196 ppm N simplified nutriculture set. Dry weight of treatment sets of simplified nutrition management are lower than that of control set, however, fresh weight is opposite. Plant height, leaf length, leaf width of cucumber has no significant between the treatments. Fruit quality and yield of cucumber are improved in phosphate rock set. Simplified nutrition management by adding only N and K in soilless culture could not influence growth and yield of cucumber ‘Sia Di’ and that was simple and convenient. Moreover, that did not consider the probable of chemical composition interacted and it could decreaes the waste and pollution of nutrient solution by using lime, guano, phosphate rock, and meat bone dust. Besides, that could provide for studing on organic vegetable nutriculture.