Wheat jointing and booting fertilizer refers to the fertilizer applied during the jointing to the tip of the flag leaf. From jointing to booting, it is the most vigorous period of growth and development in wheat. During this period, wheat needs more fertilizer and absorbs more. Applying the jointing and booting fertilizer to meet the nutrient supply during this period is an important part of capturing high yields of wheat. Since winter, the climate of our city is abnormal, the wheat planting period is postponed, the low temperature and rainy weather are more, the accumulated temperature is less than that of previous years, the leaf speed of wheat is slow, the leaf age is lower than normal, and most of the wheat has no prolonged seedling phenomenon. Year-by-year comparison, this year's wheat growth schedule will be delayed by about 15 days, similar to last year, but most of the wheat has entered the jointing stage. According to the stripping of wheat in different towns in Datong and Shouchang, the average number of leaves in wheat is about 2.0 leaves. The first section has been fixed, and the second section begins to stretch. The current wheat management It is imperative to apply the jointing fertilizer.
1. The best period for applying the jointing and panicle fertilizer to most wheat fields is mid-March. The late-season wheat jointing and panicle fertilizer can be postponed until the beginning of March, generally using urea-7.5 kg per mu. Fertilization in wheat fields with less application of pre-fertilizer and poor growth of wheat should be applied early and applied more frequently; for wheat fields with insufficient phosphorus and potassium fertilizer applied to the former fertilizer, imported compound fertilizer can be applied, and the average mu is about 10 kg.
2. In the recent period, the rainy weather continued to check the conditions of the wheat field ditches during fertilization, and timely clean the ditch drainage to prevent field waterlogging to ensure the normal growth of wheat roots and prevent premature aging of wheat.
3, in the late March and early April before and after wheat heading, combined with the prevention and control of scab and other diseases on the wheat root dressing, a spray with Shi Baobao (10 ml) or potassium dihydrogen phosphate 100 g flush 50 The kilogram spray can effectively increase the seed setting rate and 1000-grain weight of wheat, and achieve the purpose of increasing production and income.
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