In order to find out the suitable planting density of fennel seedling in Haiyuan county,Ningxia,fennel cultivar Minqin No.2 was used as the test material,and carried out three planting densities of M1(low density),M2(medium density)and M3(high density).Soil water content,chlorophyll content,plant height,root character and fresh(dry)yield per unit area were measured within 30 days.The results showed that with the extension of growth time,the plant height,taproot length and fresh and dry yield per unit area of M1,M2 and M3 aniseed seedlings showed a gradual increase trend.Thirty days after emergence,the increase trend of plant height of aniseed seedlings was M2>M1>M3,and the increase trend of taproot length was M2>M3>M1.The growth trend of fresh and dry production per unit area was M2>M3>M1.In summary,when the target yield of Minqin No.2 fennel seedling is 170-220 kg·667 m-2,the appropriate density of Minqin No.2 fennel seedling is 50 000-70 000 plants·667 m-2.
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万方数据