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本文通过地膜覆盖栽培番茹根系生理以及和地上器官相关的研宄,结果表明:地膜覆盖栽培番茄,首先促进了番茄根系的生长发育,如根系发达、侧根多、主根加粗、木质部导管增多,从而增强了根系的生理机能,并加强了根系对水分、养分的吸收和运输能力。根系的呼吸速率增强,导水面积扩大,因此,吸收到作物体内的氮、磷、钾含量增多。结果影响到地上部器官茎、叶的相关生长,使番茄地上部分的叶数多、叶片厚、茎加粗、植株增高等,因此改善了产量生理因素,使光合速率增强,叶面积指数扩大,叶绿素含量提高,经济系数增大,促进了地膜覆盖栽培番茄的早熟和高产。
In this paper, the physiology of Pan-Ru root system and the research on the above-ground organs were studied by plastic film mulching. The results showed that the plastic film mulching cultivation tomato firstly promoted the growth and development of tomato root system. For example, root system was developed with more lateral roots, thicker main roots, Thus enhancing the physiological function of the root system and strengthening the ability of the root system to absorb and transport moisture and nutrients. Root respiration rate increased, water-conducting area expanded, therefore, absorbed into the crop of nitrogen, phosphorus and potassium content increased. The results affected the shoots and leaves of shoots aboveground parts of the growth, so that the aerial parts of the tomato leaf number, thick leaves, thick stems, plants increased, thus improving yield physiological factors, so that photosynthetic rate, leaf area index expanded, Chlorophyll content increased, the economic coefficient increased, and promoted the mulching cultivation of tomato premature and high yield.