Global warming would deteriorate rice ( Oryza sativa L.) quality, especially chalk characteristic. To better cope with the challenges from global warming, effects of nitrogen (N) fertilizer at heading stage on quality under elevated temperature during grain‐filling were investigated. Four different growth regimes, including no without N (CK), (ET), (ET+N), (CK+N), conducted. Elevated grain filling was achieved by a free‐air enhancement facility increase 4°C in ET and 3.7°C ET+N. Results...

Grain quality indicates rice commodity value. This research compared grain and physicochemical properties of premium japonica from three production regions, Yangtze River downstream China (YRDCN), Northeast region (NECN) Japan. Results showed that there were distinct characteristics variance among the groups rice, while CVs most parameters low to high was Japan, YRDCN NECN. presented obvious lower apparent amylose content (AAC) ratio each chain-length sections amylopectin, higher protein...

Rice–crayfish continuous production system offers high economic and ecology benefits, which developed rapidly in China. To investigate the effects of different mechanical transplanting methods planting densities on rice yield quality, Nanjing 2728 was used to determine growth performance under mechanically transplanted carpet seedling (MTCS) with equal row spacing (30 cm) at five spacings pot (MTPS) wide narrow rows (23 + 33 spacings. The results showed that MTPS presented significantly...

High temperature frequently occurs during rice’s early grain-filling period in the south of China, negatively affecting rice yield and quality posing a major threat to local production. This experiment researched influence 3.5 °C warming first 20 days on emphatically investigated effects low-broadcast nitrogen fertilizer application level (LBN), high-broadcast (HBN) foliar (FN) at heading organ temperature, leaf photosynthesis, chlorophyll fluorescence, grain quality, pasting thermal...

Recently, rice-aquatic animal integrated farming (RAAIF) has grown rapidly in China due to its favorable benefits and the lower application of pesticides fertilizers. However, rice lodging occurs frequently under RAAIF, which restricts yield. We assumed that semi-deep water irrigation may cause weaker rice-lodging resistance since it is most significant environmental factor for RAAIF distinguishes from monoculture. To investigate response stem mechanism, three management modes, namely...

Rice–crayfish rotation expanded rapidly in China, as it provides considerable profit and reduces pesticide application. This study investigated the impact of different mechanical transplanting methods planting geometry on yield lodging resistance an indica rice variety under a rice–crayfish system 2018 2019 Hongze Lake district, using excellent-quality Taoyouxiangzhan. Seedlings were mechanically transplanted two carpet seedling (MTCS) with equal spacing (30 cm) at five spacings pot (MTPS)...

Nitrogen (N) is a major factor affecting rice yield and lodging resistance. Previous studies have primarily investigated the impact of N management on in conventional monoculture (RM); however, few performed such investigations rice-crayfish coculture (RC). We hypothesized that RC would increase risk optimizing application practices improve resistance without food security. conducted two-factor (rice farming mode practice) field experiment from 2021 to 2022 test our hypothesis. The modes...

Grain-filling, as the final growth stage of rice, is sensitive to environmental temperature change. Previous studies mainly concerned about effects high stress during grain-filling on rice growth, and most experiments were carried out with pot for cultivating greenhouse warming. This research investigated response superior spikelets (SS) inferior (IS) two japonica cultivars elevated under open-field warming conditions in lower reaches Yangtze River Basin using free-air enhancement facility....

Changing from conventional to organic farming might have fewer negative environmental impacts because of the avoidance synthetic fertilizer and chemical pesticides. In this study, economic viability sustainability performance four dominant (rice-green manure rotation (RG), rice-duck co-culture (RD), rice-crayfish (RCF) rice monoculture (RM)) one (rice (CRM)) production modes were evaluated in Jiangsu Province, China. Compared with CRM mode, increased benefits density improved benefit crop...

An accurate and objective evaluation of the carbon footprint rice production is crucial for mitigating greenhouse gas (GHG) emissions from global food production. Sensitivity uncertainty analysis model can help improve efficiency credibility evaluation. In this study, we combined a farm-scaled consisting widely used methods with typical East Asian system comprising two fertilization strategies. Furthermore, Morris Sobol' sensitivity to evaluate model. Results showed that exhibits certain...

Abstract BACKGROUND Rice–duck coculture is an ecological agricultural mode; however, the nutritional and environmental benefits of transforming from conventional rice monoculture to rice–duck are unknown. Based on survey data life‐cycle assessment approach, this study conducted a carbon footprint evaluation (CR), organic (OR), (ORD) using different functional units. RESULTS The per hectare ORD (7842 ± 284 kg CO 2 eq ha −1 ) was slightly lower than that CR (7905 412 ), while higher OR (7786...

Abstract Rice false smut, a devastating grain disease in rice, is great challenge to global food security. Rice–crayfish coculture (RC) has been widely used recent years because it increases farmers' income, stabilizes rice yield, and reduces the use of pesticides chemical fertilizers. Currently, smut becoming threat stability RC systems. A field experiment demonstrated that was much more serious than monoculture (RM) among most varieties both 2019 2020. The fold change (RC vs. RM) range...

Given the shortage of fresh water in semi-arid and arid zones, wastewater is becoming an increasingly important source irrigation. This study analyzes principles root water/nitrogen uptake dynamics wastewater-irrigated pepper fields. Comparison rates nitrogen show that rate NO3-N order magnitude higher than NH4-N. When original content soil high, additional irrigation will not increase NO3-N. The gradually with increasing light intensity air temperature

Previous studies have mainly focused on cadmium (Cd) contamination in conventional rice monocultures, and no research rice-crayfish coculture has been reported. In this study, a Cd-contaminated (0–30 mg kg−1) co-culture system was established by adding exogenous Cd. The results showed that the Cd concentration each tissue of organ crayfish increased with increasing soil concentration. Specifically, as follows: root > stem leaf ≈ panicle grain brown rice, jointing heading stages were...

The rice–crayfish continuous production system developed rapidly due to its high economic benefits and eco-friendly nature in China. This study explored the effects of mechanically transplanted methods planting geometry on relationship between rice yield canopy structure, under rice-crayfish rotation using excellent-quality indica rice, carried out 2018 2019. Three mechanical transplantation were set as follows: carpet seedlings with 30 cm equal row spacing (CMTE), pot narrow alternating 23...

In recent years, rice–crayfish integrated farming has expanded rapidly in the Hongze Lake district of China as booming consumer market crayfish. However, current rice cultivation technology limits yield and economic profits farming, characteristics farmers’ practices culture under system are unknown. To understand present by farmers their perceptions provide direction for improvement, a survey was carried out 2019 2020 Xuyi County, representative region China, comprising 208 engaged RCIF,...