Returning to the green period, we must pour wheat seedlings, and pay attention to the plan after pouring, so as to improve the temperature and security. After watering in the green period, due to the low temperature, the recovery of ground temperature will be very slow, the humidity will be high, the disease in wheat fields will increase, and the growth of wheat will be relatively slow. Because at this time wheat has less water for its own growth, watering is not good for wheat growth. Returning green manure can effectively promote the growth of wheat, increase the tillering in the spring and promote the emergence of the ear. Therefore, returning Qingshui is suitable for wheat fields with severe drought conditions, and returning green manure is suitable for under-populated wheat fields.
Insufficient population In wheat fields, we must pour up water and apply body fat. The fat and water during the growing stage does not increase the total amount of tillers, but it can increase the percentage of spikes and thus increase the number of mu ears. Therefore, the fertilizer and water during the start-up period are suitable for wheat fields with insufficient population, wheat fields with severe drought conditions, and wheat fields that have weakened during the pre-winter season. For moderately suitable or large scales suitable for wheat fields, the management of water and fertilizers will cause the groups to be too large, the internodes of the bases to be too long, the central leaves to be too large, and the lodgings to be easy to fall. Therefore, it is not appropriate to adopt them. At the same time, the wheat fields that have been poured back to Qingshui are also Should not be used.
The main wheat field should be the first water and fertilizer management in the jointing period in spring. Fertilizer and water management at jointing stage can accelerate the size and polarity of wheat in the wheat field, promote the differentiation of florets, make the flag leaves broad and robust, and improve the ability to resist premature aging, which is conducive to the cultivation of reasonable groups and robust individuals. It is of significance for the formation of a reasonable number of ears per mu and grains per spike. major. At the same time, the first fertilizer management is also the key to reducing the frequency of spring watering in the jointing period and promoting the technology of wheat water-saving and high-yield production. In order to reduce watering and high yield, only the watering that has little effect on wheat yield before jointing is eliminated. .
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