Study On Protected Cultivation And Environmental Factors' Correlation Analysis In Grapes

This paper studied the effects of three different protected cultivation modes on growth and development in grapes systematically, and some regularities under specialized environmental conditions, as well as their correlations. The main results were as follows: 1. Two-year-old 慒ujiminori?grape was used to study the effects of arched trellis cultivation on growth and development. Leaf dry weight, leaf thickness and leaf total chlorophyll content were increased under this cultivation mode. In the same time, weight of grape cluster and berry were improved, shape of grape cluster was uniform, extent of bind was compact. Anthracnose infections of leaves and fruits were decreased 42 and 15 percent respectively, and Anthi-acnose index was decreased 0.200 and 0.150. However, harvesting time was delayed in general. Grape organic fertilizer could be used and picking time should be delayed in order to improve fruit quality. 2. Three-year-old 慥enus?grape was used to study the effects on growth and development. Fruit quality, as well as POD and PAL activities, was measured continuously from color period to harvesting time. Compared to that of in the field, tartaric acid content was decreased, soluble sugars and ratio between soluble sugars content and tartanc acid content were increased. Total 2 chlorophyll content and ratio between chlorophyll a and b were decreased both in plastic house and in the field, but total chlorophyll content in plastic house was higher than that of in the field, and ratio between chlorophyll a and b was lower than that of in the field. The differences of POD and PAL activities between in the plastic house and in the field were considered to be associated with disease infection in 慥enus?grape. 3. Two-year-old 慦uhe86ll?and 慦uhe 8612?grapes w~e used to study the effects of greenhouse cultivation on growth and development Tmnperature, relative humidity and light intensity have daily and seasonal changes in greenhouse. In the same time, temperature and relative light intensity both in greenhouse and in the field showed significant at P~O.O5 or P~O. 01 levels. Compared to that of in the field, greenhouse cultivation advanced phenological phases greatly, improved bud germination, and decreased leaf diy weight. Leaves in greenhouse became bigger and thicker, and the growth of new shoots and development of new leaves were characteristic of 搒low-fast-slow? The dynamics of new leaf development showed single 揝?curve. Weight of grape cluster and index of fruit shape were improved, however, ratio between soluble sugars content and tartaric acid content were decreased.