Jiangsu Huainan and Shanghai, Zhejiang wheat field management technology

Rational application of spring fertilizer. The field with suitable number of stems and stalks is re-applied with fertilizer when the leaf color is faded, the inverted 3 leaves are extracted, and the base is fixed at the first section. Generally, 8 to 10 kg of urea and ternary compound fertilizer are applied. In the early spring, the application of nitrogen in the early spring may be more than 5 kg. The application rate and timing of the jointing fertilizer shall be determined according to the seedling condition; if the group is over large, the fertilizer may not be applied, according to the seedlings. Apply the boot fertilizer.

Clear the ditch and defend against waterlogging. In the autumn of last year, in order to rob the broadcast, the quality of the field ditch system is not high; there may be more rain in the spring this year, and the inner and outer three ditches should be cleaned as early as possible to ensure the smooth flow of the ditch and ensure rapid drainage after the rain.

Grasp the opportunity to eliminate pests and diseases. For the field where the pre-winter disintegration effect is not good and the field that failed to be removed in time after the autumn sowing, according to the field grass phase, the favorable weather conditions are seized and removed in time. Strengthen the detection and control of sheath blight, powdery mildew, scab and aphids.

Spring suppression. The group of over-sized large-scale field is repressed and controlled, and the field where the rice straw is returned to the field is large, and the field where the straw and the soil are not closely combined is suppressed to prevent freezing damage caused by cold spring.

Remedy for freezing cold damage. After the spring frost damage occurs, the plant surface growth regulator such as Zhuangmiaoling is sprayed on the foliar surface to restore growth, promote the rapid growth of medium and small tillers into ear and reduce losses; and the application of quick-acting nitrogen fertilizer, generally about 5 kg of urea per mu, can be based on freezing damage The degree of occurrence increases or decreases.