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New stereo soilless cultivation device developed technology by Shanghai Sun Qiaonong Industry Co., Ltd., which is in the bottom of the device installed on a certain height of the overflow hole and built-in network core combination, only the overflow hole or network core evolved device based on a new type of device, in theory, should be better than these two devices better, better cultivation, new device Province fertilizer, matrix with less, easy-to-mobile and colonization advantages. Currently, in a variety of plants Planting cultivation. Specific effects of cultivation, however, remains to be studied. This paper studies on the lettuce cultivation, to prove that the new device applications. Exploratory test whether the four combinations of conditions according to the the device network core and the overflow hole test, to Italian lettuce as test materials, different three-dimensional cultivation device on the growth and quality of lettuce, its main content and research results are as follows: 1. studied under sand culture, several novel three-dimensional device morphological indicators and quality of Italian lettuce, results show that the new three-dimensional device can shorten the reproductive cycle of the lettuce, and increase production. Pre-harvest quality of lettuce leaf nitrate content decreased significantly, Vc, soluble sugar, protein content than the control has improved significantly, the chlorophyll content difference was not significant compared with the control. Root dry weight, fresh weight significant difference compared with the control. Show that the use of a new type of three-dimensional devices can improve the environment of the rhizosphere, the plants better growth, better performance in improving the quality and yield have. Materials to study for six kinds of lettuce growth status under the new three-dimensional device cultivation, the results show that the lettuce plant height 25cm, the growth indexes are growing well, greater than 25cm state, the fresh weight of plants increased slowly or decline. Undertaken degree of 20 ~ 25cm plants grew normally higher than 25cm, the fresh weight of the plants is significantly reduced. . Loose leaf lettuce \to improve the quality of good other treatments, and other treatments to achieve a significant level, its production compared to CK2 also have a substantial increase, which vermiculite / mushroom dregs of yield increase up to 30% or more, in the chlorophyll and root vitality also are good at CK2, and reached a significant level. Loose leaf lettuce \, the the Sunqiao formula standard dose, a dose of 1.5 times and 2 times the dose) treatment on the growth and quality of lettuce. The results show that the high temperature, nutrient solution at a dose of 1.5 times, the lettuce plant height, stem diameter, plant fresh and dry weight reached the maximum, also better than the other in terms of vitamin C, soluble protein, soluble sugar processing. At a suitable temperature, the use of a standard dose of Sunqiao recipe lettuce growth and quality of the best performance.
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