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Journal of Agriculture ›› 2018, Vol. 8 ›› Issue (11): 49-53.doi: 10.11923/j.issn.2095-4050.cjas18050011

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High Density Cultivation Techniques of Early-Middle Maturing Broccoli at Different Seedling Ages

  

  • Received:2018-05-08 Revised:2018-06-11 Accepted:2018-06-22 Online:2018-11-22 Published:2018-11-22

Abstract: To explore the growth rule and flower balls harvest dynamics of broccoli in winter and spring at different seedling ages, and define the optimal seedling age scheme in high density cultivation for increasing yield and efficiency, an experiment on‘Miracle’broccoli in high density cultivation at different seedling ages was carried out. The results showed that the seedling age of‘Miracle’broccoli was elastic, and the suitable seedling age was 40-50 days. The growth and development process changed with the seedling ages, and the whole growth period was prolonged with increasing seedling age (P=1.3829X +56.895, r=0.9948**). On the contrary, the collecting period of flower balls was shortened (F=-0.4171X+29.562,r=0.9587**). High density cultivation with 46600 plants/hm2 (40% higher than that of conventional cultivation) showed that the qualified rate of commercial flower balls was over 98%. The ball shape, ball color and ball consolidation were ideal with bud uniformity and good quality, and the yield could reach 30 t/hm2.