[Effects of straw returning combined with nitrogen fertilizer on spring maize yield and soil physicochemical properties under drip irrigation condition in Yellow River pumping irrigation area, Ningxia, China].

Soil compaction and nutrient deficiency are common problems in Ningxia Yellow River pumping irrigation area, which adversely affect crop yield. A two-year (2017-2018) field experiment of straw returning combined with nitrogen fertilizer were designed. Four nitrogen application levels (pure N with 0, 150, 300 and 450 kg·hm) were set under the condition of full smashing of maize straw (12000 kg·hm) returning, with the conventional nitrogen application (pure N with 225 kg·hm) without straw returning as the control (CK) to investigate the effects of straw returning combined with different amounts of nitrogen fertilizer on soil physical and chemical properties and maize yield under drip irrigation condition.

[Effects of returning straw with nitrogen application on soil water and nutrient status, and yield of maize].

The study focused on the problems of lean soil and low fertility in arid area of central Ningxia. To explore the optimum rate of nitrogen (N) fertilizer application under straw returning, taking the treatment with straw return and no nitrogen fertilization as control, we investigated the effects of three N application levels (150, 300, 450 kg·hm) with return of total maize straw (9000 kg·hm) on soil water and nutrient status and maize yield. The results showed that the soil water storage (0-100 cm) at 300 and 450 kg N·hm in middle and late growing period of maize was significantly increased by 10.

Hepatocellular carcinoma-associated single-nucleotide variants and deletions identified by the use of genome-wide high-throughput analysis of hepatitis B virus.

This study investigated hepatitis B virus (HBV) single-nucleotide variants (SNVs) and deletion mutations linked with hepatocellular carcinoma (HCC). Ninety-three HCC patients and 108 non-HCC patients were enrolled for HBV genome-wide next-generation sequencing (NGS) analysis. A systematic literature review and a meta-analysis were performed to validate NGS-defined HCC-associated SNVs and deletions.

[Identification of Chinese Traditional Medicine Cistanches Herba from Different Places by HPLC-ESI-MS and FTIR Methods].

Five samples of Cistanches Herba from different places were analyzed by HPLC-ESI-MS and FTIR methods. The effective compositions in Cistanches Herba including cistanoside A, echinacoside, acteoside , isoacteoside, 2'-actylacteoside, cistanoside C and tubluoside B were determined by HPLC-MS. The common peak ratio and variant peak ratio were calculated by FTIR spectroscopy of the five samples and the dual index sequence of common peak ratio and variant peak ratio were established.

[Identification of some Piper crude drugs based on Fourier transform infrared spectrometry].

The common peak ratio and variant peak ratio were calculated by FTIR spectroscopy of seven medicinal plants of Piper. The dual index sequence of common peak ratio and variant peak ratio was established, which showed the sibship of the medicinal plants. The common peak ratio of Piper kadsura (Choisy) Ohwi, Piper wallichii (Miq.

[Identification of Chinese traditional medicine Angelicae Pubescentis Radix from different places by fourier transform infrared spectrometry].

Common and variation peak rates were calculated as dual-index for drug samples based on the infrared spectrogram of Angelicae Pubescentis Radix samples from different places. The results indicated that the common peak rates of 4 samples from Sichuan province, 2 samples from Gansu province, and 2 samples from Hubei province were higher than 73% , 79. 5% and 76.

[The research on the identification of some polygonatum crude drugs by Fourier transform infrared spectrometry].

The common peak ratio and variant peak ratio were calculated by FTIR spectroscopy of six medicinal plants of polygonatum. The index sequence of common peak ratio and variant peak ratio of six medicinal plants was established and the FTIR spectroscopy was analyzed by cluster analysis, which indicated the sibship of the six medicinal plants, polygonati rhizoma, polygonati odorati rhizoma and their adulterant such as Polygonatum filipes Merr., Polygonatum macropodium Turcz.

[Genetic analysis of resistance to rice blast in four Japonica landraces from Taihu Lake region].

The crosses were made between four japonica rice (Oryza sativa L.) landraces Bodao, Tieganqing, Jiangnanwan and Queernuo from Taihu Lake region, which were highly resistant to the blast (Magnaporthe grisa), and a susceptible japonica variety Suyunuo to produce F1 and F2 generations. The P1 , P2, F1 and F2 generation from various combinations were inoculated separately with Japanese blast strain Hoku 1 and Chinese races ZE3 and ZG1 to study genetic patterns of resis-tance in the four landraces to the blast.