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Test to a 4 -year-old \By the comparative greenhouse inside and outside Sweet Nectarine Trees phenophase differences , differences in environmental factors , the impact of growth and development, fruit quality Sweet Nectarine Trees . This trial findings greenhouse environmental factors than the open-air conditions under the big difference ; mainly to : the same material waiting period , the greenhouse temperature , humidity and earth temperature than the open-air conditions of high , but the light intensity is low. Greenhouse cultivation allows early as Hongzhushan fruit than open about two months ahead of the listing , to extend the flowering period , the fruits of growth and development of new slightly growing season , and defoliation delayed ; while the sugar content of the fruit , soluble solids decreased acid content and Vc content increased , the quality has declined . Greenhouse conditions also change the size and quality of the peach tree leaves , increased leaf area , chlorophyll content increased , but the blade is thinner . The test results also show that , outside temperature , ground temperature , light and humidity and shoots the length of the positive correlation significantly forward , fruit vertical diameter , horizontal warp and an average weight have very significantly positively related to resistance , temperature and fruit soluble solids , and other environmental factors extremely significant . In the greenhouse , shoot length , and temperature significantly , and the the light correlation was significant , ground temperature and humidity is not significant ; fruit longitudinal diameter , transverse diameter , soluble solids content and average fruit weight and greenhouse temperature, light and humidity have a significant positive correlation with the ground temperature is not significant . Overall description of the ground temperature in the greenhouse unsuitable for the formation of the early Hongzhushan the growth and fruit quality , light and humidity conditions in the greenhouse branches thrive , the temperature in the greenhouse is not conducive to the soluble solids the improvement in the actual production conditions should be improved so as to improve the yield and quality of the early Hongzhushan .
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