Effects of amount of nitrogen applied and planting density on yield and its components of middle-season indica hybrid rice;

Preliminary study on optimum planting density of the Dian-type hybride rice Dianza32(Japonic);

The relationship between planting density, seedlings per hill and multiplication yield of Dian type Ⅰ cyto-genetic male sterile line;

The results showed that appropriate transplanting density(2.

Transplanting density affects rice quality among of which chalky rice, chalky area, Amylose content, milled rice and protein are affected greatly.

The planting density showed little impact on sapwood width,while it had highly significant effects on wetwood width.

The results indicated that the effects of planting density on crown width,crown length,DBH,wetwood areas,sapwood areas,wood basic density,compression strength parallel to grain and MOE were highly significant,and those effects on wetwood proportional,sapwood proportional and MOR were significan.

Taken Armeniaca sibirica forests in western region of Liaoning province as research objects,growth status and soil amelioration effect of Armeniaca sibirica forests under the condition of different densities were compared by the means of variance analysis and multiple comparison, and the optimum planting density of Armeniaca sibirica forests at different ages were chosen.

Effects of Amount of Nitrogen Applied and Planting density on Grain Yield of II Youhang1 Using as Ratoon Rice Cultivar;

Studies on mathematic model of planting density and fertilization affecting the yield of common bean seed;

Objective In order to find out the effect of planting density on the yield and quality and determine the optimal planting density for Cynanchum bungei root tuber.

The results showed that the best cultivation density of peanuts was 12000 cave/667m 2~13000cave/667m 2 and its yield was 350~375kg/667m 2,under condition of spraying 100mg/kg P333(Paclobutrazol) chemical control by interplanting peanuts with wheat .

Under the condition of experiment,study the measures of cultural technique from Cultivation density,Organic is fat,Nitrogenous fertilizer,Phosphate fertilizer,Potassium fertilizer and so on.

The research chose three testing factors,which were transplanting density,the amount of topdressing urea and the distributive proportions of urea as tiller fertilizer and spike\]et-developing fertilizer under their treated amounts,adopting simplex-lattice design and setting field parameter tests.

The results show that transplanting density greatly affects the establishment of a rapid growing high-yielding colony.

The field experiment was conducted by split-plot design of two factors to study the effects of applying amount of controlled-release nitrogen fertilizer(SCU) and transplanting density on the growth and development and yield of the medium super hybrid rice combination Y Liangyou 1,and the mathematical model of yield to nitrogen rates and transplanting densities was set up.