At present, wheat in Shandong Province has gradually entered the stage of jointing and jointing, but due to the low temperature in winter, rain and snow and windy weather in the middle and late March have caused freezing damage to wheat in some places.
According to reports, in recent years, wheat springs and freezes have occurred frequently in parts of Shandong Province during the period of wheat uplifting. Watering in time before cooling can adjust the near-surface temperature and ground temperature to achieve the effect of preventing early spring frost damage. In case of freezing damage, it is necessary to apply quick-acting fertilizer to promote early growth of seedlings and increase the rate of high-level tillers. Generally, about 10 kg of urea per mu is applied and plant growth regulators such as foliar fertilizer are applied early to promote the recovery of frozen wheat as soon as possible.
During this period, the increase of fertilizer demand and water demand for wheat is the high-efficiency period of fertilizer and water management and the period of frequent pests and diseases. It is beneficial to promote the development of the jointing stage and increase the rate of ear formation by reducing the number of spikelets. “When the wheat is up and jointed, it is necessary to classify and manage the fertilization of the wheat field and strengthen the prevention and control of pests such as red spider, midge, blight, stripe rust.â€
For the wheat fields that have suffered from frost damage, use the following methods to “rescueâ€: “Hold the water and topdress. The wheat field that suffers from freezing damage should first be well watered to replenish the soil moisture to promote the recovery of wheat as soon as possible. At the same time, according to the degree of damage, the time-consuming nitrogen fertilizer should be applied. In order to promote rapid seedlings, small cockroaches to catch large cockroaches, increase the high-level tillering rate, and reduce the damage of freezing damage. Generally, 10 kg of urea is applied per acre combined with watering. At the same time, the plant cell membrane can be sprayed in time for the severely damaged wheat field. The application of the fertilizer.
Prevention and control of wheat sheath blight, powdery mildew and rust can be evenly sprayed with a suitable liquid medicine, and it can also cure the gray planthopper to achieve "prevention of disease, insect proof, anti-premature aging and dry hot wind" to reduce losses.
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