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Temperature has an important effect on plant growth and sex determination in flowers. The effect of different temperatures (high temperature: 30°C /25°C (day/night), medium temperature: 25°C /18°C and low temperature: 15°C /10°C ) on flower sex determination and fruit yield was studied in Chieh-qua (Benincasa hispidaCogn. var. Chieh-qua How. ‘No. 4 Jiang xin’), also the content of absicsic acid (ABA) and indole acetic acid (IAA) in the shoot apex was measured. The results showed that medium and low temperatures during seedling stage boost the female flower differentiation after transplanting, compared with high temperature treatment, and the effect was more obvious when the temperature was lower. Lower temperature increased the content of ABA and IAA in shoot apex of Chieh-qua. There was a positive relationship between the ratio of IAA/ABA and plant female flower determination under different temperature treatments (R2= 0.8744). Temperature may affect female flower differentiation of Chieh-qua by changing the contents of ABA and IAA in shoot apex. Fruit yield was not significantly affected by different temperature treatments.Temperature has an important effect on plant growth and sex determination in flowers. The effect of different temperatures (high temperature: 30°C /25°C (day/night), medium temperature: 25°C /18°C and low temperature: 15°C /10°C ) on flower sex determination and fruit yield was studied in Chieh-qua (Benincasa hispidaCogn. var. Chieh-qua How. ‘No. 4 Jiang xin’), also the content of absicsic acid (ABA) and indole acetic acid (IAA) in the shoot apex was measured. The results showed that medium and low temperatures during seedling stage boost the female flower differentiation after transplanting, compared with high temperature treatment, and the effect was more obvious when the temperature was lower. Lower temperature increased the content of ABA and IAA in shoot apex of Chieh-qua. There was a positive relationship between the ratio of IAA/ABA and plant female flower determination under different temperature treatments (R2= 0.8744). Temperature may affect female flower differentiation of Chieh-qua by changing the contents of ABA and IAA in shoot apex. Fruit yield was not significantly affected by different temperature treatments.

Based on the coal samples from a layer of a block in Xinjiang, the coal-rock triaxial stress test was carried out in 15 groups, and the fracture mechanism and physical properties of coal-rock under low confining pressure, medium confining pressure and high confining pressure were determined. The test shows that under low confining pressure, the elastic modulus of the coal-rock is slowly rising as it is compacted. Under the medium confining pressure, the coal-rock has completed the compaction and turned into an elastic medium, and the elastic modulus has a linear increase trend. Under high confining pressure, the elasticity of coal-rock is destroyed and the resulting elastic modulus will Go linearly to change trends. And the larger the confining pressure interval value, the greater the cohesive force and the smaller the friction angle.