(1) The spatial structure of corn and peanut communities has obvious stratification phenomenon, which can make full use of light energy. When the light intensity is less than 2, the photosynthetic intensity of corn-peanut intercropping is greater than that of monoculture, which improves the photosynthetic efficiency. Therefore, under suitable light intensity, intercropping is one of the types that accumulate more organic matter per unit time and unit leaf area.

(2) Due to the influence of corn, the light energy received by peanut intercropping is not as sufficient as that of single cropping, and the ATP and [H] provided by light reaction are reduced, which leads to the decrease of dark reaction C3 compounds and the decrease of photosynthetic rate.

(3) Corn is a C4 plant, which has strong ability to utilize carbon dioxide, dark reaction to fix more carbon dioxide, and strong photosynthesis.

(4) Fat can be turned orange by Sudan III dye solution.

(5) heating Fehling reagent in water bath to detect the existence of reducing sugar. Yeast can produce alcohol through anaerobic respiration under anaerobic conditions, and acidic potassium dichromate solution can be used to detect the existence of alcohol.

So the answer is: (1) Intercropping stratification.

(2)ATP and [H] three-carbon compounds

(3) Dark reaction

(4) Sudan III dye solution

(5) Does it contain soluble reducing sugar? Whether alcohol is produced under anaerobic conditions.