The main measures for the management of wheat in the return period are:

(1) Loosening loosing soil: This is an important measure to promote early and green growth of young wheat. The number of times to draw the Songshi is generally planned from 2 to 3 times from return to jointing. The depth of the Songshi should be shallow and then gradually deepened. In high-yielding fields, the wheat fields where the seedlings are in danger of lodging must perform a deep-middle cultivating before and after their rise.

(B) Dressing: Returning green manure should be applied by seedlings. For weaker 2-3 types of seedlings before the growing season or poor fertility and early decomposing and defertilizing of the wheat seedlings, early application and heavy application of green manure should be applied, and when the surface starts to defrost, it can be grabbed and applied (top fertilizer). Generally, about 20 kg of ammonium bicarbonate can be topped off per acre, and phosphorus-deficient wheat fields should be mixed with about 15 kg of superphosphate per acre. The best conditions for the application of diammonium phosphate 10-15 kilograms per mu. Returning green manure plays an important role in promoting the transformation of wheat seedlings from weak to strong and increasing the number of mu ears. However, for the seedlings with a higher number of seedlings, or wheat fields that are prosperous and not de-fertilized, green manure is not applied. Should be postponed until the time when he got up, to control the invalid childbirth, to improve the rate of tiller to ear, increase the number of acres of purpose.

(3) Jieqing Ridge: The wheat covered with stalks in winter must be cleared and ridged in due course after returning green to improve the temperature and promote root development.

(4) Casting back to Qingshui: When will you pour on Qingshui? We must look at the land and see the seedlings have a flexible grasp. If you don't pour winter water before winter or fill it early in winter, when you return to green, you have a dry wheat field (below 3cm in dry soil layer). You can pour water back into the area as early as possible. However, the amount of water should not be too large, nor can it be flooded.

(5) Chemical weeding: chemical weeding in wheat fields, low labor and high efficiency. Currently used herbicides and application methods: if 72% 2,4-D butanol is used, 40-50 grams per acre, and 15-20 kg of water; if 20% tetrachlorohydrin is used, the amount per acre 200-2 50 grams, mixed with 15-20 kg spray. The general spraying time is before the greening season and before the jointing stage, the sunny weather is selected, there is no wind and no dew, and the spraying is better when the temperature is higher.

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