北海道夕張郡栗山町堆肥化センターにおいて製造された有機肥料(クリピット)のカボチャにおける施肥試験
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[Synopsis] Compound fertilizer decrease was combined with organic fertilizer by using the pumpkin of the effect of using of manufactured Kuripit in the Kuriyama-cho, it experimented, and the following results were obtained. 1.In the plant length and number of leaves (Table 3), it was in examination 2 the length of the vine of examination 1 longest of 18th July, and shorts in the control plot. As for number of leaves, there are a lot of numbers of leaves in examination district 1 with 11.6 pieces a big difference was not seen in the examination section though it was an almost similar number of leaves in control plot and examination 2. 2.The examination 1 was 996 in number of fruits of 10a (Table 4), and amount was the highest with 1894Kg. Next, it became the order of the control plot in examination 2. 3.As for weight of one fruit, carotene gross weight and total sugar (Table 5) was heavy in the order of examination 1, control plot, and examination 2. The carotene gross weight became the examination 2, the examination 1, and the order of the control plot. Moreover, total sugar became the examination 1, the examination 2, and the order of the control plot. Using Kuripit caused neither the growth delay by control of compound fertilizer nor the decrease in amount from the result of the actual experiment above. Oppositely, it was suggested to promote the growth of the pumpkin in organic fertilizer 200Kg using ＋30％ decreased compound fertilizer plot, and to increase the amount of the harvest. However, it seems that the carotene gross weight improved the qualities most though initial growth is delayed a little a little in organic fertilizer 300Kg using ＋30％ decreased compound fertilizer Plot, and some amount decreased, too. As for Kuripit manufactured from the above-mentioned in the Kuriyama-cho, it was suggested that the possibility to be able to use for the pumpkin cultivation of agriculture on the site be extremely high. The necessity for being pursue the amount of manure of Kuripit and compound fertilizer further in the future was suggested.
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