| We study three varieties (common maize-ND108, high oil maize-HO115, high starch maize-FY3) under several concentration intimidates that formed with five kinds of heavy mental that compound together (five kinds of heave mental is Chromium Cadmium Plumbum Hydrargyrum and Arsenic), the contents of study including yield, Photosynthetic, Enzymes and heavy mental distribute in plant and the change through maize life. The result summary as follows:1 The effect of compound heavy mental on maize plant Photosynthetic and YieldYield of biology and yield of kernel have similar changing rule with the treatments concentration rise, the lower concentration treatment(1K,2K), which leads these yield enhance, the increment are 2K>1K, when come to high concentration treatments(3K,4K), these yields are show downtrend compare to the peak which appears at 2K, the decrement is 4K>3K,4Kalso notable low than CK.The Photosynthetic capacity being enhanced under low concentrations of compound heavy mental (1K 2K), the enhanced effect is 2K>1K. The effects includes the increment of chlorophyll, the adding of index between chlorophylla and chlorophyllb, the enhance of leaf area index and the enhance of Photosynthetic of leaf. In the later phase of maize life, the leaf of 2K treatment maize which Photosynthetic decline faster than those of other treatments (CK 1K). The highest Photosynthetic belong to ND108 in three varieties.According to above results we can find that lower concentration can stimulate the growth of maize, the effect first show at the enhancement of... |
PDF Full Text Request