, 0 (CK), 50, 100, 150 and 200 mmol·L-1. Results revealed that, in contrast to CK, the sodium levels of 50 and 100 mmol·L-1 increased the most carboxylation rate (Vc maximum) plus the maximum electron transport price (Jmax), whilst the salt levels of 150 and 200 mmol·L-1 considerably decreased Vc max and Jmax. The net photosynthetic rate (Pn), mesophyll conductance (gm) and dark respiration price (Rd) gradually diminished with the increases of sodium concentration. Compared with CK, the salt concentrations of 50 and 100 mmol·L-1 would not impact gm, but substantially decreased Pn and Rd. The salt concentrations of 150 and 200 mmol·L-1 significantly decreased Pn, gm and Rd, which were significantly different from the sodium levels of 0, 50 and 100 mmol·L-1. Pn of cotton fiber seedlings under different salt concentrations was simulated by the FvCB design. Compared with the results through the FvCB design without deciding on gm, the FvCB design with gm enhanced the dedication coefficient between the simulated and measured values and reduced the mean absolute mistake. The salinity limit of cotton fiber seedlings ranged between 100 and 150 mmol·L-1. With the increases of salt focus, the limiting factor of leaf photosynthesis changed from mesophyll conductance to impaired components of photosynthetic apparatus. The FvCB design combined gm could increase the precision of photosynthesis simulation.Semi-arid region of Northwest China is characterized by barren earth, with high pH and high carbonate content. Saline-alkali land is very easily created in this area, which inhibits earth microbial task and results in earth nutrient reduction. To enhance soil health in this region, ramifications of intercropping alfalfa and triticale on rhizosphere soil vitamins and bacterial neighborhood construction were examined though a three-consecutive-year test. The results indicated that soil organic matter (SOM) content of alfalfa rhizosphere in intercropping had been somewhat greater than that in monoculture, while pH and offered potassium (AK) content were lower than that in monoculture. The concentrations of SOM, readily available nitrogen (AN), available phosphate (AP) and AK of triticale rhizosphere in intercropping were substantially more than those who work in monoculture. The bacterial sequences, OTUs, richness, and variety of alfalfa and triticale in rhizosphere soil were all greater than those in monoculture. At phylum amount, Proteobacteriicale intercropping is an effective technique to improve soil wellness in semi-arid area of Northwest China.Canopy nitrogen content in grain is a vital indicator of wheat whole grain yield and high quality. When working with remote sensing technology to anticipate grain canopy nitrogen content, a hyperspectral mode with high adaptability and large reliability is necessary to improve the inversion effectiveness. We created a brand new three-band spectral plant life index (NEW-NDRE) by combining a two-band spectral index NDRE additionally the spectral reflectance at 550 nm centered on area information gathered from different websites, years, with different types and nitrogen amounts as well as multiple growth phases. The NEW-NDRE ended up being compared to 11 standard spectral vegetation indices with regards to of grain canopy nitrogen content inversion. NEW-NDRE and three traditional indices (NDRE, NDDA and RI-1dB) all closely correlated with grain canopy nitrogen content. NEW-NDRE displayed the greatest correlation with grain canopy nitrogen content at early whole grain completing stage, with a coefficient (R2) of 0.9 and a root mean squared error (RMSE) of 0.4. The inversion model created with all the NEW-NDRE was validated with an independent dataset. The relative error (RE) for the design ended up being 9.3%, that was substantially less than that of NDRE, NDDA and RI-1dB. Typically, NEW-NDRE is a far more sturdy index for grain mice infection canopy nitrogen content inversion than conventional indices through eliminating environmental limitation, and it also could possibly be used as a fresh device for exact fertilizer application.Based on daily meteorological information and agro-meteorological information in three provinces of Northeast Asia during 1981-2017, combined with chilling injury indices, we analyzed the spatial-temporal circulation faculties of solar, heat, precipitation sources and sterile-type chilling injury in rice growing period, particularly in the booting and flowering phases. In 1981-2017, agriculture climatic sources in rice growing period revealed a warming, drying out and darkening trend. Accumulated temperature (≥10 ℃) and sunshine hours increased with an interest rate of 73.5 ℃·d·(10 a)-1 and 17.7 h·(10 a)-1 correspondingly, while precipitation reduced with a rate of 8.9 mm·(10 a)-1. At the booting phase, farming climatic resources showed a warming, drying out and dar-kening trend. Daily average temperature increased 0.27 ℃·(10 a)-1 and sunshine hours and preci-pitation reduced 2.06 h·(10 a)-1 and 1.90 mm·(10 a)-1 correspondingly. During the flowering phase, farming climatic sources revealed a trend of heating, wetting and darkening. Daily average temperature increased with a rate of 0.12 ℃·(10 a)-1, while sunshine hours decreased with a rate of 0.83 h·(10 a)-1. In contrast to that at the booting stage, precipitation into the flowering stage increased with an interest rate of 1.35 mm·(10 a)-1. Under the back ground of environment warming, the regularity and power of rice sterile-type chil-ling injury decreased in many regions, with considerable inter-decadal variations. Through the study period, the regularity and intensity of sterile-type chil-ling injury had been the best in Heilongjiang Province, modest in Jilin Province, additionally the least expensive in Liaoning Province.We investigated the effects of interplanting on soil aggregate distribution and security of purple soil in financial orchard in a new-constructed slope land, predicated on 12 kiwifruit sowing experi-mental plots with a slope of about 12°, a length of 18 m, and a width of 1.5 m. Three types of interplanting patterns had been implemented by interplanting purple sweet potato (PSP), hairy vetch (HV), and weeds (W) for three years, respectively, using the bare land with no vegetation as control (CK) to determine the aggregate indicators at 0-15 cm earth layer. The outcome revealed that the quantity and size of soil liquid stabilized aggregates (WR>0.25) all tended to boost which rated in the order of PSP>HV>W>CK. The order of soil aggregate framework damage price (PAD) and fractal dimension (D) had been CK>W>HV>PSP, suggesting that earth aggregate in PSP ended up being the essential stable, followed by HV therapy.
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