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Perspective on oil flax yield and dry biomass with reduced nitrogen supply

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Oil Crop Science 2020年第2期5卷 69-73页

作者： Qiaoxia Zhang Yuhong Gao Bin Yan Zhengjun Cui Bing Wu Kun Yang Jun Ma gansu Provincial Key Laboratory of Aridland Crop Science Gansu Agricultural UniversityLanzhouChina College of Agronomy Gansu Agricultural UniversityLanzhouChina College of Life Science and Technology Gansu Agricultural UniversityLanzhouChina

Field experiment was arranged in a randomized complete block design to determine effects of nitrogen(N)application levels(J0:150 kg/hm^2,J1:120 kg/hm^2,J2:90 kg/hm^2,J3:60 kg/hm^2)on regulating dry biomass accumulation,allocation and translocation,and grain yield of oil flax during 2018 cropping *** promotion was observed in dry matter during accumulation stage of oil flax,when N rate was reduced by 40%(from 150 to 90 kg/hm^2).Under J2 treatment,translocation of dry matter from vegetative organs to pod increased by 38.46%and 61.54%respectively,when compared with J1 and J0 treatment Dry matter distribution proportion of pod at maturity increased 4.47%-7.61%,contribution rate of leaf to grain upgraded 5.09%-8.77%,and number of effective pods and grains per pod increased by 27.16%-45.38%and 6.49%-26.59%respectively compared to other *** a result,seed yield of oil flax under J2 treatment was 2.23%-18.21%higher than those of other *** study recommended 90 kg/hm^2 as the best N fertilizer level to improve seed yield of oil flax.

关键词： Oil flax Nitrogen application rate Dry matter Yield component Semi-arid area

Agronomic cultivation measures on productivity of oilseed flax:A review

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Oil Crop Science 2022年第1期7卷 53-62页

作者： Zhengjun Cui Bin Yan Yuhong Gao Bing Wu Yifan Wang Haidi Wang Peng Xu Bangqing Zhao Zhi Cao Yong Zhang Yaping Xie Yapeng Hu Xingbang Ma Junyi Niu College of Agronomy Gansu Agricultural UniversityLanzhouChina gansu Provincial Key Laboratory of Aridland Crop Science Gansu Agricultural UniversityLanzhouChina College of Life Science and Technology Gansu Agricultural UniversityLanzhouChina Crop Research Institute Gansu Academy of Agricultural SciencesLanzhou730070China

Oilseed flax is one of the most important oil crops in *** the improvement of people's living standards and the deepening knowledge of the nutritional value of oilseed flax,the demand and economic value of oilseed flax are increasing,and the cultivated area in China is ***,the grain yield of oilseed flax is lower than other oil *** varies significantly from year to year,combined with a lower degree of mechanization,which has greatly limited the healthy development of the flax *** of the effects of agronomic measures on productivity and water use efficiency of oilseed flax are reviewed in this *** major agronomic strategies for the productivity of oilseed flax were presented based on fertilization,plant density,irrigation,cropping pattern and weed *** research should investigate the effect of silicon and potassium fertilizers on the mechanism of lodging resistance of oilseed flax,the effects of diversified cropping systems(strip intercropping and crop rotation)on high and stable productivity and efficient utilization of resources.

关键词： Agronomic measures Oilseed flax Productivity Water use efficiency Fertilizer use efficiency Cropping patterns APSIM

Effect of nitrogen and phosphorus application on soil nitrogen morphological characteristics and grain yield of oil flax

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Oil Crop Science 2020年第2期5卷 62-68页

作者： Dong Liu Zhengjun Cui Bin Yan Yuhong Gao Bin Wu Wenzhen Li Junyi Niu gansu Provincial Key Laboratory of Aridland Crop Science LanzhouChina College of Agronomy Gansu Agricultural UniversityLanzhouChina College of Life Sciences and Technology Gansu Agricultural UniversityLanzhouChina Dingxi Research Institute of agricultural Sciences DingxiChina

In order to identify effects of nitrogen(N)and phosphorus(P)on soil nitrogen morphological characteristics and grain yield of oil flax,a two-factor experiment was conducted in a randomized complete block design in typical semi-arid and hilly-gully area of Loess Plateau with 3 replicates in 2013 and *** levels of N application included 150 kg/hm2(N2)and 75 kg/hm2(N1).P application included 150 kg P2 O5/hm2(P2)and 75 kg P2 O5/hm2(P1).Temporal and spatial variation of soil nitrate nitrogen(NO3-N)and ammonium nitrogen(NH4+-N)contents in 0-60 cm soil layer,and relationship between soil NO3-N accumulation(SNA)and grain yield of oil flax were *** showed that SNA increased with evaluated N application rate in different soil layers(0-20 cm,20-40 cm and 40-60 cm).With the increased P application,SNA increased at N1 level but decreased at N2 *** under N2 P1 treatment increased by 73.33%in 2013 and 74.97%in 2014 respectively,compared with control treatment(CK)at maturity *** yield of oil flax also increased by 44.27%in 2013 and56.55%in 2014,compared with CK under the same *** analysis showed that SNA in different soil layers were respectively positively correlated with grain *** conclusion,this research suggested that the optimal fertilizer application rate was 150 kg N/hm2 and 75 kg P2 O5/hm2 in the Northwest of China.

关键词： Oil flax Nitrogen Phosphorus Soil NH3--N Soil NH4+-N Grain yield

Varied previous crops on improving oilseed flax productivity in semiarid Loess Plateau in China

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Oil Crop Science 2020年第4期5卷 187-193页

作者： Bangqing Zhao Yuhong Gao Bin Yan Zhengjun Cui Haidi Wang Zhi Cao gansu Provincial Key Laboratory of Aridland Crop Science Gansu Agricultural UniversityLanzhouChina College of Agronomy Gansu Agricultural UniversityLanzhouChina

To investigate the effects of crop rotation on oilseed flax growth and yield,three season experiments were carried out in semi-arid area of Dingxi,gansu from 2017 to *** designed 6 rotational systems were FFF(flax-flaxflax),PFF(potato-flax-flax),WPF(wheat-potato-flax),FPF(flax-potato-flax),PWF(potato-wheat-flax)and FWF(flax-wheat-flax).Flax growth and yield investigation results showed that crop rotation increased leaf area duration,dry matter accumulation,seed nitrogen accumulation,water and nitrogen used efficiency,compared with continuous cropping of *** yields in rotation systems were 22.23%–44.11%greater than those of continuous cropping *** in wheat and potato stubbles had higher tiller number(21.43%and 29.46%),more branches(14.24%and 6.97%),effective capsules(26.35%and 28.79%),higher water use efficiency(40.26%and 33.5%),higher nitrogen partial factor productivity(33.85%and 31.46%)and dry matter(41.98%and 25.47%)than those in oilseed flax *** concluded that crop rotation system was an effective measure for oilseed flax productivity in semi-arid area by improving yield components and promoting biomass.

关键词： Crop rotation Linseed Grain yield Water use efficiency Nitrogen partial factor productivity

Film mulching treatment inf luences dry matter and yield of oil flax in semi-arid area of China

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Oil Crop Science 2018年第3期3卷 185-190页

作者： Zhengjun Cui Bing Wu Yuhong Gao Chunchun Li Yongquan Ta Zhibing He Junyi Niu gansu Provincial Key Laboratory of Aridland Crop Science Gansu Agricultural University College of Agronomy Gansu Agricultural University College of Life Science and Technology Gansu Agricultural University

A feld study was set up to compare dry matter accumulation and grain yield of 3 different types of flm mulching, namely FFC （full flm muched on tiny ridges covered with soil）, PFC （full flm muched covered with soil）, and PF （full flm muched with no cover）. The experiment was laid out in a complete random design with 3 replications at north-west （34°40′N, 105°06′E） of China. This study determined that （1） flm mulching treatment increased leaf area and dry matter accumulation of oil fax in semi-arid areas; （2） accu-mulation of dry matter under PFC treatment was markedly higher than other treatments except anthesis stage; （3） average grain yield of oil fax under flm mulching treatment was 52.67%-60.33% higher than fat plot without mulched or ridge （CK） treatment; （4） grain yield of oil fax was substantially correlated with plant height, grain number and 1,000 kernels weight. This study demonstrated that flm mulching has signifcant effects on crop grain yield improvement in the northwest of China.

关键词： oil fax flm mulching dry matter accumulation grain yield semi-arid area

Oilseed flax(Linum usitatissimum L.),an emerging functional cash crop of China

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Oil Crop Science 2020年第2期5卷 55-55页

作者： Yuhong Gao gansu Provincial Key Laboratory of Aridland Crop Science College of AgronomyGansu Agricultural UniversityLanzhouChina

Oilseed flax(Linum usitatissimum L.)is one of the most important oil crops in alpine regions of North and Northwest China,which is an annual herb and belongs to Linaceae family and Linum *** to the application,Linum is often divided into three types,production oil,extraction fiber and both for production oil and extraction *** flax is native to Near East and Mediterranean *** is widely distributed throughout the world,with the largest cultivated area in Asia and Europe,followed by the *** is the largest area for planting oilseed flax and China is *** China.

关键词： Linum crops planting