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放秋垄是玉米、高粱生育后期田间管理中的一项重要工作。封垄后的地,经过一段时间后还会长出各类杂草,与庄稼争肥、争水,直接影响产量的提高。如果对玉米、高粱适时放一遍秋垄,能起到疏松土壤,改善土壤水、气、热等状况,消灭田间后期杂草,改善作物下部田间小气候,促进早熟,提高产量的作用。据调查表明,年年坚持放秋垄,可比没放秋垄的地每亩多收获20—25公斤。放秋垄较适宜的时间由以下几点判定:
Falling autumn ridge is corn, sorghum late field management of an important task. After the closure of the ridge, after a period of time will grow all kinds of weeds, and crops fight fat, Zhengshui, a direct impact on production. If the maize, sorghum timely put autumn ridge, can play loose soil, improve soil water, gas, heat and other conditions, the elimination of late weeds in the field, to improve crop field microclimates, promote early maturity, improve the role of yield. According to the survey, every year adhere to put Akita, comparable to no Akita ridge to harvest 20-25 kilograms per acre more. Put more appropriate time to fall by the following points to determine: