Antifreeze measures for wheat
Hotel Safe Box,Password Hotel Safe Box,Hotel Electronic Safe Box,Safe Box Hotel Room Hebei Yingbo Safe Boxes Co.,Ltd , https://www.yingbosafes.com
Second, the cause of wheat freeze injury:
1. Natural factors: First, the pre-winter temperature is too high, resulting in excessive growth of wheat and early stage development. Without cold-resistant exercise, the anti-freezing ability is weak. The second is that it has sustained large-scale and large-scale sustained low temperatures just after entering the wintering season.
2. Human factors: First, sowing drought, and most of the spring varieties. The second reason is that the sowing rate is too large and the wheat seedling grows. Third, the quality of the site is poor, the wheat is thin, and its anti-freezing ability is low.
Third, winter antifreeze measures:
1, control prosperous strong: prosperous wheat fields generally grow more than 5 leaves in the wheat seedlings, the depth of 5-7 cm in the wheat line, must reach a certain depth, and to root. If we continue to root our roots, we will not only fail to control and prosper, but will also loosen the soil and improve the environmental conditions in the roots. Instead, we will promote the growth of wheat sprouts.
For wheat fields with too many basic seedlings, thinning seedlings should be carried out as early as possible when wheat enters the 3-4 leaf stage. For wheat fields with prosperous tendencies, repression before winter can promote growth. Pre-winter repression also breaks the splits, bridges cracks, preserves heat, protects against freezing, inhibits growth of the main stem, and promotes root development. For the weak seedling field where the basal fertilizer is under applied or the sowing date is late, the manure should be applied early, and the weak growth should be promoted.
2, freeze protection seedlings: Before the winter wheat in the rows, 250-300 kilograms per mu acreage, broken wheat straw, etc., there is Paul, antifreeze effect, after rot can also improve the soil, fertility and fertility. After entering the overwintering period, Shun Tuwan spreads soil and fertilizer, which can protect the wind, protect the earth, increase the temperature and prevent freezing, and add nutrients for the growth of returning green.
Appropriate winter irrigation is an effective measure to prevent winter wheat freezing injury. Winter irrigation can increase the heat capacity of the soil, generally it can increase 1-3 degrees Celsius, at the same time, it can bridge the earth seam, promote more tillers, and strengthen seedlings. Winter irrigation should be done with water at a temperature of 4 degrees Celsius. If it is less than 4 degrees Celsius, there is a danger of freezing injury.