1. Watering seedlings, drought and freezing. For drought-fed wheat fields, early spring soil thawing, promptly supplement irrigation, drought protection seedlings, timely scratching after watering, break the consolidation, further improve soil moisture, prevent or reduce the threat of freezing damage.
2. Suppression, planning, and maintenance. The combination of repression and squeezing is carried out, and the squeezing of the sorghum is first performed to promote the release of Panasonic on the soil and increase the temperature of the saggers. For wheat fields with straw returning, coarse soil preparation during autumnal planting, flooding and dredging, and wheat fields without irrigated conditions, timely repression after soil thawing in early spring, sinking soil, bridging cracks, reducing water evaporation, and promoting root growth. The repression of Wang Miao after the return of spring wheat to early spring is also an effective measure to control the growth of Wang Miao.
3. Promote control and integration, fertilizer and water operations. For irrigated wheat fields, the three types of seedlings are promoted mainly, the second type seedlings are promoted to control and combined, and one type of seedlings is controlled to promote binding. Spray Zhuang Fengan and other regulators during the start-up period, shorten the internodes of the base, control the prosperous growth of the plants, and prevent lodging at the late stage of growth.
4. Suppression. For non-irrigated dryland wheat, the repression and extraction of alfalfa should be used as a key measure for the management of spring wheat and improve the ability of wheat to resist drought.
5. To prevent freezing injury, timely remedy. Pay close attention to the weather forecast, timely irrigation before cooling, improve the soil moisture content, adjust the microclimate near the ground floor, reduce the temperature variation on the ground, and prevent the early spring freezing injury.
Spring water management technology recommendations: 1. Pouring well-watering water. The jointing stage is the florets differentiation stage. This stage ensures the water supply, is conducive to the development of floret, prevents the degradation of floret, and is extremely important for increasing the number of spikelets. For young seedlings with good early spring moisture (0-40 cm relative soil moisture content of more than 65%), water-saving can be poured after the polarization of tillers. The irrigation quota is 750 cubic meters per hectare, which promotes robust growth of plants. 2. Mashing the ear of pregnant water. All types of wheat seedlings should be fed with ear and ear water at a relative soil moisture of 0-40 cm below 70%. The irrigation quota is 750 cubic meters per hectare. Miao Wang, when the lyrical condition is good, the booting water can be postponed until the heading. If the fertility is insufficient, when the wheat leaves are yellow, the combination of watering can be used, and the appropriate amount of the panicle-fertilizer can not be too late. Otherwise, the ripening will be delayed and the grain weight will be reduced.
The critical period of irrigation of winter wheat is jointing stage and booting stage. Under normal weather conditions, as long as the irrigation in these two periods is guaranteed, the water in the water sensitive period of winter wheat can generally be satisfied.
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