Cabbage is one of the important vegetables in China. It is planted before winter and harvested from May to June of the following year. During this period, convulsions often occur. Xiaobian for your analysis of spring cabbage unskilled convulsions are as follows:
1. Varieties of cabbage: Different varieties have different growth in winter. In early spring cultivation, winter varieties should be selected, which are difficult to pass vernalization.
2, sowing date: the earlier the sowing, the seedlings are too large when planting, the seedlings are in a low temperature condition for a long time, the possibility of vernalization is large, the probability of occurrence of immature convulsions is large. On the contrary, if it is properly planted late, the seedlings will not reach the size that can accept low temperature, and the convulsion will not occur when the temperature is low.
3, the size of cabbage seedlings: Where there are more than 7 leaves, after a period of low temperature, through the development of the vernalization stage, immature convulsions will occur. Under low temperature conditions, the larger the seedlings and the stronger the growth, the greater the possibility of convulsions.
4, cabbage field management: early spring cabbage fertility water is insufficient, soil is poor, continuous drought, but also easy to cause convulsions.
5, climatic conditions: If the winter temperature is high, but also the spring low temperature, the cold spring time is long, even if the timely sowing, because the winter seedlings grow vigorously, too much trophic body will cause partial convulsions.
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