In the test,xenoplastic grafting between eggplants and tomatoes are used to study effects of growth and development of the subject,disease resistance and yield increase and grafting on qualities of the fruit.

Polyacrylamide, as an ameliorant of soil structure, is the ameliorant of soil in the aspect of water conservation, fertilizer conservation and yield increase, with a new product named PAM made in French as a material, we adopt simulating and field experiments, using Yang ling soil, to study the effect of PAM on soil structure and fertilizer eluviations systematically.

The concrete measures,design calculations and manufacturing of the technical improvements of centrifugal air compressor to increase production and save energy in Yunnan Natural Gas Chemical Plant were presented Checked after the improvements,the compressor actually increased production by 17 5% and saved energy by 6 98%,this completely met the user′s demand

01% zinc sulfate solution can increase the number of grain per ear and increase production 9.

01mg·L-1 TPK can make maize early maturing 2 - 6 days,increase production by 11.