How to choose a suitable corn variety
When it is a year of spring plowing and cultivation, it is very important for a large number of corn growers to choose suitable corn varieties. There is a great deal of knowledge in the selection of corn varieties. There are as many as 100 varieties in the market now, and good varieties of corn can be purchased for good harvests. Failing to select good breeds, people mistakenly for a moment, mistaken people for one year. For the sake of security, the following points should be noted:
1. Understand the soil conditions of the land, precipitation and accumulative temperature, the former crops, disease conditions, and so on, so as to achieve local conditions.
In areas with high production management and fertile soil and abundant water sources, corn varieties with high yield potential and high yield potential can be selected, such as Xianyu 335. On the contrary, we should choose varieties with lower production potential but better stability, such as Chengyu 10.
According to the local precipitation and accumulated temperature selection. There is a general understanding of the local accumulated temperature, such as Chengde County 2012 ≥ 10 °C activity accumulated temperature of 3289.7 °C, which is the need to choose the type of accumulated temperature, at least not higher than the accumulated temperature level. In addition, according to experience, the amount of snowfall in winter last year is small, and winter is not cold. In the second year, summer rainfall will be relatively high, the accumulated temperature will not be high, the varieties with too long growth period, the accumulated temperature will not be enough, and the impact will be mature. On the contrary, in the winter of last year, the amount of snowfall was heavy and the winter was very cold. In the following year, the summer rainfall was generally less, and the accumulated temperature was higher. It was easy to choose varieties with strong drought resistance, and the middle and late-maturing varieties could be properly planted in the depression.
The increase in production and income of corn is directly related to the cultivation of the former crop. If the former is planted with soybeans, the soil fertility is better, and high-yielding species should be selected; if the former is planted with corn and grows well and yields, the species can be continued to be selected; if the former is infected with certain diseases, Such as head smut, should be avoided when selecting species susceptible to the disease. In addition, the same species can not be planted continuously in the same plot for three or four years, otherwise there will be land barrenness and variety degradation.
2. Understand the characteristics of varieties and cultivation techniques
When buying seeds, it is necessary to ask breeders for the introduction of varieties and cultivation techniques, especially to understand the weaknesses and deficiencies of the varieties and prevent loss due to lack of guidance or misunderstanding of technology.
By understanding the characteristics of the new varieties, the varieties with super-high yield, high density, multi-resistance, and good quality were selected.
3. Confirm seed tag
In 2001, the Ministry of Agriculture of the People's Republic of China Order No. 49 "Administrative Measures on Crop Seed Labeling" (hereinafter referred to as the "Administrative Measures") made more detailed and specific provisions on the labeling content of seed labels.
The role of the seed tag is mainly to provide seed buyers with information about seeds, including variety information, quality information, instructions for use, precautions, operator information, and so on. The seed buyer determines whether the variety is the variety he wants to buy and whether the seed operator has credibility, etc. based on the information provided on the seed tag.
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