Controlled by wheat fields

The pre-winter overgrowth of wheat has great hidden troubles. First, the ability to resist drought and cold in winter is poor, and the seedlings are prone to freeze damage. Second, excessive tillering before winter, excessive nutrient consumption, and inadequate nutrient in the later period, it reduces the spike rate. Affecting production; Third, it is easy to lay in the late period.

The main reasons that cause wheat seedlings to grow are: too early sowing, narrow and long seedling leaves, drape, lack of tillering power; excessive sowing, crowded growth of seedlings, weak tillering power, less tillering; excessive fertilizer and water, more seedling tillers, leaf width . For Wang Miao caused by different reasons, appropriate solutions should be taken. (1) For seedlings that are sown prematurely, they must be picked up in a sunny and timely manner. Be careful not to suppress the frost or dew in the morning so as not to harm the seedlings. After repression, the fish was scratched in time, and depending on soil moisture, 15 kg of ammonium bicarbonate was applied per acre in combination with watering. If necessary, spray growth agents such as mepoxide can be sprayed. (2) In order to make up for excessive consumption of soil nutrients, the seedlings should be planted in a timely manner in order to establish suitable populations and promote individual development; at the same time, appropriate amount of nitrogen and phosphorus quick-effect fertilizers should be added together with watering. (3) For the vigorous growth of Wang Miao, it is necessary to squat the roots to cut off some secondary roots, control nutrient absorption, reduce tillering, and cultivate strong seedlings.

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