Garlic has an abnormal growth phenomenon that grows twice, which affects the commercial value of garlic. How to reduce the occurrence of secondary growth of garlic and improve the value of garlic, there are some studies to analyze this issue. It is suggested that late seeding can effectively reduce the secondary growth, but reduce the yield; the soil moisture is sufficient, the plant growth is vigorous, and the secondary growth is increased; the size of the secondary valve is different and the secondary growth rate is also different. Is this the case? We use a soil moisture analyzer to measure soil moisture and analyze the relationship with secondary growth.
In the rain shelter of vegetable station of Northwest Agricultural University, soil water treatment was carried out on February 22, 1990 (before the differentiation of scales) to 7 days before the harvest of garlic bulbs. The soil moisture content was determined by the dry weighing method. Each area broadcasts 140 petals with a spacing of 10 rows. 25 cm, repeat 4 times. Since the soil moisture treatment had been carried out for 46 days, the height of plant height and plant fresh weight of the high soil water had significantly or significantly exceeded that of the low soil water zone. The difference in the early sowing zone was more obvious than in the late sowing zone. There was no significant difference in late planting and early planting height of high soil water partitions, but the late sowing pseudostem length and plant fresh weight still significantly lag behind early sowing. The difference in plant growth between different soil moistures is mainly due to the difference in relative growth rate (RGR); the difference in plant growth during different sowing periods is mainly due to the earlier emergence of seeding and the longer growth period. The decrease or disappearance of the difference is due to the relatively high growth rate of late planting males.
Sowing date and soil moisture had little effect on the secondary growth of the outer layer type. In the early sowing high soil water zone, the secondary growth rate of the outer layer was only 2.32%, and no secondary growth of the outer layer occurred in the other treatment areas, which may be related to the smaller garlic seed used in the experiment. In the low soil water partition, the early seeding rate of the second inner growth type and the index of the inner layer type were slightly lower than that of the late sowing, while the high growth rate and index of the early growth rate of the high soil water area were significantly higher than that of the late sowing rate. Up to 5% significant level. In other words, in the low soil water partition, early sowing had little effect on the secondary growth of the inner layer, but under the condition of sufficient soil moisture, early sowing had a significant role in promoting the secondary growth of the inner layer. No matter in the early sowing or late sowing area, increasing the relative water content of the soil increased the rate and index of the secondary growth of the inner layer.
The summary of soil moisture measurement data and garlic yield by the soil moisture analyzer showed that the sowing date and soil moisture had the same effect on the garlic yield as that of the garlic mango, but the difference in yield during different sowing periods and different soil moisture. None reached the level of development.
In the rain shelter of vegetable station of Northwest Agricultural University, soil water treatment was carried out on February 22, 1990 (before the differentiation of scales) to 7 days before the harvest of garlic bulbs. The soil moisture content was determined by the dry weighing method. Each area broadcasts 140 petals with a spacing of 10 rows. 25 cm, repeat 4 times. Since the soil moisture treatment had been carried out for 46 days, the height of plant height and plant fresh weight of the high soil water had significantly or significantly exceeded that of the low soil water zone. The difference in the early sowing zone was more obvious than in the late sowing zone. There was no significant difference in late planting and early planting height of high soil water partitions, but the late sowing pseudostem length and plant fresh weight still significantly lag behind early sowing. The difference in plant growth between different soil moistures is mainly due to the difference in relative growth rate (RGR); the difference in plant growth during different sowing periods is mainly due to the earlier emergence of seeding and the longer growth period. The decrease or disappearance of the difference is due to the relatively high growth rate of late planting males.
Sowing date and soil moisture had little effect on the secondary growth of the outer layer type. In the early sowing high soil water zone, the secondary growth rate of the outer layer was only 2.32%, and no secondary growth of the outer layer occurred in the other treatment areas, which may be related to the smaller garlic seed used in the experiment. In the low soil water partition, the early seeding rate of the second inner growth type and the index of the inner layer type were slightly lower than that of the late sowing, while the high growth rate and index of the early growth rate of the high soil water area were significantly higher than that of the late sowing rate. Up to 5% significant level. In other words, in the low soil water partition, early sowing had little effect on the secondary growth of the inner layer, but under the condition of sufficient soil moisture, early sowing had a significant role in promoting the secondary growth of the inner layer. No matter in the early sowing or late sowing area, increasing the relative water content of the soil increased the rate and index of the secondary growth of the inner layer.
The summary of soil moisture measurement data and garlic yield by the soil moisture analyzer showed that the sowing date and soil moisture had the same effect on the garlic yield as that of the garlic mango, but the difference in yield during different sowing periods and different soil moisture. None reached the level of development.
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