为提高机采棉脱叶、吐絮效果,探索脱叶剂的施药方法,筛选出适合于南疆各垦区的棉花脱叶剂产品。分别采用50%噻苯隆WP、80%噻苯隆WP、40%乙烯利水剂、50%敌草隆WP按不同配比在阿拉尔垦区、库尔勒垦区、沙井子垦区、塔里木垦区进行了田间对比试验。试验结果表明:540 g/L敌草隆·噻苯隆SC 300 m L/hm^2加乙烯利1 050 m L/hm^2处理棉花后脱叶率提高了9.95%,吐絮率提高了7.07%,棉纤维长度增加了-0.91%,增产率达2.42%,其关联系数可达0.720 6,明显高于其他处理的关联度。综合各脱叶剂处理棉花后的脱叶、吐絮及对产量、品质的影响程度,南疆棉区使用540 g/L敌草隆·噻苯隆SC 300 m L/hm^2加乙烯利1 050 m L/hm^2更优于其他配比。
[Objective] This study aimed to study the effects of different picking time and storage environment on fruit quality of a pear cultivar Xinlin No.7 and the relationship between storage environment and fruit quality, s...
详细信息
[Objective] This study aimed to study the effects of different picking time and storage environment on fruit quality of a pear cultivar Xinlin No.7 and the relationship between storage environment and fruit quality, so as to provide a theoretical basis for storage and preservation of Xinli No.7. [Method] The fruits of Xinli NO.7 were picked up in August （optimal） and September respectively and then stored in room, cellar and freezer, respectively. The dynamics in temperature, humidity, CO2 concentration, fruit weight loss rate, pericarp chlorophyll content and fruit interior quality were determined. [Result] The environment differed significantly among different storage methods. In room and cellar, the temperature showed a downward trend, and the humidity decreased after early-mid October. The CO2 concentration changed steadily, and increased rapidly in cellar after December. In freezer, the temperature and humidity changed steadily, and the CO2 concentration increased after October. The changes in quality of the fruits harvested in August and September were similar. There was a certain correlation between storage environment and fruit quality of Xinli No.7. In room and cellar, the variation trends of tem- perature and humidity were consistent with those of chlorophyll content, fruit hardness and titratable acid content with positive correlations, but were opposite from those of fruit weight loss rate, soluble solids content and soluble sugar content with negative correlations. In freezer, the CO2 concentration was closely related to the changes in fruit quality. Its variation trend was consistent with those of fruit weight loss rate and soluble solids content, but was opposite from those of pericarp chlorophyll content, fruit firmness, soluble sugar content and titratable acid content. The differences in some of the traits reached significant levels （P〈0.05, P〈0.01）. [Conclusion] With the extension of storage time, the temperature, humidity and CO2 concentration ch
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