A Study on Phosphorus Use Efficiency of Wheat

Wheat is one of the most important grain crops in China with great demand. It plays an important role to use phosphorus fertilizer for improving wheat yield. Therefore,application and foundation studies on wheat phosphorus use efficiency are so vital nowadays. Here,we have a simple review on definition of phosphorus use efficiency,response to phosphate starvation in plant,relevant genes cloning,impact factors,screening high phosphorus efficiency genotype and QTL analysis of phosphorus utilization efficiency in wheat.

Silage Fermentation Technology and Its Effects on Growth Performance of Local Pigs

This paper first introduced the silage fermentation technology,including the selection of strains and activation expansion technology,the screening of high-quality fermentation raw materials,and the comparative experiment of fermentation process.It discussed feeding methods for sows and growing-finishing pigs at different breeding stages.In addition,it analyzed the effects of fermented silage on the growth performance of local pigs at various stages.Finally,it is concluded that silage fermentation can improve the water retention performance of pork,improve the quality of pork from local pigs,increase economic benefits,and achieve the purpose of saving costs and increasing efficiency.

Effect of Intercropping Ginger and Sweet Maize on Growth,Yield and Benefits

Ginger is an important cash crop in Shandong Province and it usually takes the sole cropping in the production.In order to explore new ginger cultivation patterns and improve planting benefits,sweet maize(Jingengtian 1)was intercropped with ginger(Laiwu ginger).The plug seedling was performed for sweet maize on April 18.Ginger was planted with plastic film mulching on April 20,and double-row sweet maize seedlings were transplanted on the ridges of interlaced ginger fields on May 2.The sweet maize was harvested from July 18 to 25,and the tillering rate of sweet maize reached 100%.The number of tillers in intercropping was more than that of sole cropping,and the highest average tiller reached 5.32 per plant;when sweet maize was intercropped,the number of ears decreased by 17.35%and the ear weight decreased by 8.07%.Ginger was harvested on October 20,the number of branches of intercropping ginger decreased by 5.12%to 6.47%,and the rhizomes weight per plant decreased by 5.64%to 16.43%.The economic benefit of ginger intercropping sweet maize was higher than that of sole ginger cropping.The intercropping model increased the efficiency by 6.28%and 2.87%respectively in the two bases,and increased the net income by 12000 and 5000 yuan/ha,respectively.

Development of New Green Feed for Large Water Surface Ecological Fishery

In view of the fact that cages and bait are not allowed in large water surface aquiculture,1-2 kinds of new green feeds"plankton+microecologics"were developed to solve the problems of yield reduction,slow growth and difficulty in fishing of aquatic organisms caused by extensive mode.The new green feed is ecological,environmentally friendly and residue-free,which not only supplements nutrition but also meets the requirements of environmental protection.

Research Progress in Tomato Responses to Abiotic Stress

Tomato is a kind of vegetable with high economic benefits in protected farmland.Accounting for 30% of vegetable planting area in the entire protected farmland,tomato plays an essential role in cultivation of protected vegetable.Different abiotic stresses have different degrees of influence on growth and development,yield,and fruit quality of tomatoes.Therefore,finding out life activity rules of tomatoes under different abiotic stresses will be of great significance to breeding for stress tolerance and increasing tomato yield and income.This paper made an overview of research progress in tomato responses to abiotic stress in growth and development,physiology and biochemistry,and gene regulation.