Dry land wheat region fallow period water storage and soil moisture preservation cultivation method

Abstract

The invention discloses a dry land wheat region fallow period water storage and soil moisture preservation cultivation method. According to the method, after a former stubble of wheat is harvested, fertilizers are applied during the rain in early and middle July, then, deep soil turning is carried out so that ground surface fertilizers and straws are totally returned to the land, the concave-convex uneven state of the ground is maintained, the harrowing soil moisture preserving is carried out in early and middle August, and meanwhile, once chemical weeding is carried out. Compared with the prior art, the technology provided by the invention has the advantages that 0 to 300cm of soil moisture preserving quantity can be increased before the winter wheat seeding, and the soil organic matter fertilizer power can be enhanced. The technology provided by the invention has the advantages that the operation is simple, the practicability is high, the water preserving effect is obvious, the cultivation, the fertilization and the straw field returning are integrated, the organic combination of the agricultural machinery and the agricultural technology is realized, the coordinated cooperation of the cultivation moisture preservation and the fertilization water storage is realized, and the goals of wheat fallow period summer rain deep storage and season crossing utilization are reached. The method provided by the invention is widely applied to loess plateau dry land wheat regions. Compared with the traditional cultivation technology, the method has the advantage that under the average year production conditions, the wheat yield can be improved by more than 20 percent.

Description

technical field [0001] The invention relates to the technical field of crop farming, in particular to a cultivation method for water storage and moisture conservation during the fallow period suitable for dry land wheat regions on the Loess Plateau. Background technique [0002] Drought and water shortage are one of the key factors limiting the yield of dryland wheat. For a long time, dry farming mainly adopts mulching and other seeding methods to reduce runoff and ineffective evaporation of water, improve soil water retention capacity and soil moisture, and ultimately increase yield. However, the only source of water for dryland wheat is natural rainfall, and the rainfall in the dryland wheat region of the Loess Plateau is basically concentrated in July-September, which is the fallow period of the dryland wheat region. This period is the replenishment and recovery period of soil moisture. The amount of water determines the amount of moisture in dryland wheat before sowing, ...

AI Technical Summary

Problems solved by technology

The main problems in dryland wheat production are: low input of organic fertilizer, low soil fertility, low water storage and water retention capacity of the soil, resulting in low water use efficiency; late return of straw to the field, unable to rot in time, and unable to achieve the effect of increasing organic matter in the current season At the same time, it affects the quality of sowing; although the fallow period has relatively more rainfall, accounting for more than 60% of the annual rainfall, the summer temperature is high, and the evaporation loss of surface water is large, which cannot achieve the purpose of summer rain in spring; dryland wheat is basically Planting while taking advantage of moisture or waiting for rain, so the planting time is early or late, premature planting before winter, and planting too late are small and weak almost every year

However, after entering the 21st century, the new situation of "two strong and one weak" in crop production has been strengthened in material energy input, strengthened in agricultural machinery operation hardware, and weakened in farmland human input. Due to changes in rural labor force and agricultural mechanization, "four early three "The popularization and application of water storage and moisture conservation technology is facing severe challenges

Images