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以郁金香“红色印象”品种为试材,种植后选择腐熟1年的绿化粉碎物基质(A、B)、当年腐熟的基质(D、E)、树枝直接粉碎的木屑(L、M)、切削的木块(R、S)分别进行5cm和10cm不同厚度的地面覆盖,设不覆盖(CK)为对照,研究了覆盖物应用对郁金香生长发育的影响,以期为郁金香展览提供技术支持。结果表明:进行有机物覆盖后,自11月中旬至翌年2月,20cm土层的地温较对照普遍高2~3℃,而3月15日后对照的地温较覆盖处理高2℃左右;同时覆盖后20cm土层的含水率比对照提高2~7个百分点。分析不同覆盖处理对郁金香物候和地上、地下部生长发育指标的影响,D处理在叶芽和花苞萌出时间、叶片长度和宽度、花葶高度、花瓣长度和宽度、鳞茎干样质量等指标上要明显优于R、S处理,各处理间存在显著性差异,切削木块的应用效果较碎木屑和腐熟基质要差,不适合郁金香的覆盖。
The cultivars of green crushed material (A, B), the decomposed substrates (D, E) and the directly crushed wood chips (L, M) were selected with tulip “red impression” (R, S). The effects of covering application on the growth and development of tulip were studied in order to provide technical support for tulip exhibition. The results showed that the soil temperature of 20cm soil layer was 2 ~ 3 ℃ higher than that of the control from the middle of November to the following February, while the ground temperature of the control was about 2 ℃ higher than that of the control after March 15, 20cm soil moisture content increased by 2 to 7 percentage points compared with the control. The effects of different treatments on the phenological characteristics of tulip and the growth and development of above-ground and underground parts were analyzed. The results showed that the D treatment should be obvious on the time of leaf buds and buds’ eruption, the length and width of leaves, the height of scallops, the length and width of petals, Better than R, S treatment, there is a significant difference between the various treatments, the application effect of cutting wood than the broken wood and decomposed substrate is poor, not suitable for tulip coverage.