When building greenhouses, can push the close to the wall in the south part of soil on the wall, and bulldozers compaction wall, then peel the inner wall straight razed. Wall with more, so the indoor strip surface is lower than the ground of outdoor 30 ~ 40 cm. Semi-underground type strip surface with a little shading, although south but indoor strip surface is lower than outdoor and indoor Mark Twain not reduce too fast, can have better heat preservation effect. Greenhouses when vegetable plants after severe ground, wall body has become the main heating surface. Ask for an increase in the thickness of the wall is mainly in order to increase the storage quantity of heat, of course, does not rule out the role of the thermal insulation. Among them, can heat insulation is a key to the success or failure of the greenhouses in winter production. Practice proved to withstand the severe winter weather, greenhouses soil wall bottom should be up to two meters wide, should be up to 1.5 meters wide, is a trapezoid. In greenhouses plant different kinds of vegetables, should follow the principle of "low" from north to south, make plant height strewn at random and orderly, decrease as far as possible keep out each other. The same kind of vegetable transplanting, and strive to believe in same size, make plant growth, reduce the shading between strains. North and south to do strip engraftment as well at the same time, to try to accept the sun.