No Tillage With Plastic Re-mulching Maintains High Maize Productivity via Regulating Hydrothermal Effects in an Arid Region

Abstract

Plastic is a valuable mulching measure for increasing crop productivity in arid environments; however, little is known about the main mechanism by which this valuable technology actuates spatial–temporal changes in soil hydrothermal effect. So a 3-year field experiment was conducted to optimize soil hydrothermal effect of maize field with three plastic mulched management treatments: (1) no tillage with plastic re-mulching (NM), (2) reduced tillage with plastic mulching (RM), and (3) conventional tillage with annual new plastic mulching (CM). The results showed that NM treatment increased soil water content by 6.6–8.4% from maize sowing to seedling stage, than did CM, and it created a good soil moisture environment for sowing of maize. Also, NM had greater soil water content by 4.8–5.6% from maize silking to early-filling stage than had CM, and it made up for the abundant demand of soil moisture for the vigorous growth of maize filling stage. The NM treatment increased water consumption (WC) before maize big-flare stage, decreased WC from big-flare to early-filling stage, and increased WC after early-filling stage. So NM treatment effectively coordinated water demand contradiction of maize at entire growing season. NM decreased soil accumulated temperature (SAT) by 7.0–13.0% at maize sowing to early-filling stage than did CM, but NM had little influence on the SAT during filling stage. In particular, the treatment on NM had smaller absolute values of air–soil temperature differences than RM and CM treatments during maize filling stage, indicating that NM treatment maintains the relative stability of soil temperature for ensuring grain filling of maize. The NM treatment allowed the maize to grow in a suitable hydrothermal status and still maintained high yield. In addition, NM treatment obtained higher net income and rate of return by 6.4–11.0% and 44.1–54.5%, respectively, than did CM, because NM treatment mainly decreased the input costs for plastic and machine operations. Therefore, the NM treatment can be recommended as a promising technique to overcome simultaneous heat stress and water shortage in arid environments.

Exploring Plastic Mulching as a Strategy for Mitigating Drought Stress and Boosting Maize Yield in the Ecuadorian Andes

“…The study observed soil water content levels reaching up to 40% in the 0-10 cm layer and up to 31% in the 10-20 cm layer [22]. This consistency in results affirms that plastic mulching effectively mitigates soil water evaporation and augments soil water retention in the upper layers, not only in an Asian context [3,16,23,24] but also in the highlands of the Andean region.…”

Straw Strip Mulching Increases Winter Wheat Yield by Optimizing Water Consumption Characteristics in a Semi-Arid Environment

“…To make full use of limited rainfall resources, surface mulching has become an effective measure to increase yield in dry farming agroecosystems. Among the mulching methods, plastic film mulching has been widely used in the agricultural production of arid and semi-arid regions and has demonstrated yield-increasing effects [4][5][6][7][8]. Especially after whole plastic film mulching is adopted, a closed physical barrier is formed on the surface Water 2022, 14, 1894 2 of 13 that effectively reduces soil evaporation and noticeably enhances crop yield and water-use efficiency (WUE) [8][9][10].…”

No-till and nitrogen fertilizer reduction improve nitrogen translocation and productivity of spring wheat (Triticum aestivum L.) via promotion of plant transpiration

“…In the Hexi Corridor of northwestern China, a waterlimiting area, no-till is widely adopted to conserve soil water (Yin et al, 2021). Wheat (Triticum aestivum L.) and maize (Zea mays L.) are the two main crop species cultivated in this region.…”

“…Thus, the wheat received no-till with previous plastic film mulching. It is beneficial for wheat to increase N productivity, as no-till and plastic film mulching can improve soil water status (Yin et al, 2021), and improved water conditions may increase N translocation (NT) (Mon et al, 2016). Moreover, N fertilizer is typically applied to increase N uptake (Tan et al, 2021a).…”