Study On Annual Utilization Of Seeding Greenhouses Under Different Planting Patterns

In recent years, the rapid development of the transaction of farmland at home has brought lots of agricultural cooperatives in the villages and towns. Mechanical transplanting and seeding greenhouses also improves dramatically. In the situation of lots of seeding greenhouses have been constructed, most of seeding greenhouses are idled or planted a few self-sufficient vegetables after rice seeding every year. The proportion of the actual utilization of seeding greenhouses is less than 50%. It causes serious waste of farmland and infrastructure. This experiment started in May 2014 to May 2015 in Taicang, Jiangsu including 3 planting patterns which included 3repeats aims to explore new planting patterns about annual utilization of seeding greenhouses and create economic benefits for farmers and villages. Rice seeding-watermelon-strawberry (R-W-S)transplanted strawberry after rice seeding and rewarding watermelon. Rice seeding-Chinese white cabbage-strawberry(R-C-S) transplanted strawberry after rice seeding and rewarding Chinese white cabbage. Rice seeding-cucumber-mushroom-strawberry(R-C-M-S) has 2 step. In this study,3 different planting patterns were applied in the production to investigate diversities of their canopy climate, physiological traits, yield and economic benefits, the reuse of waste substrates. The results showed that:1. The mutative trend on temperature of 3 planting patterns is consistent. The temperature of R-C-S pattern rised the fastest in 3planting patterns. The average humidity of R-C-M-S is the highest, the R-W-S's is just the opposite. There was no significant difference on the illumination of 3 planting patterns. That can be determined is the upper floor's illumination higher than the middle.2. Taking 6 kinds of crops as the experimental material, this experiment included 4 kinds of interplant. Except of watermelon which grew poorly because of high-temperature environment,5 kinds of crops grew well. There is a certain degree of protection effect for young strawberry in watermelon-strawberry and cucumber-strawberry. Cucumber-pleurotus ostreatus and strawberry-mushroom significantly furthered pleurotus ostreatus'growth and played a certain role to ensure production of edodes.3. Three kinds of planting patterns had different economic benefits. The R-W-S' economic benefit was the lowest in 3 patterns because of tetranychus cinnbarinus but it still had potential of yield. The R-C-S was affected little by external factors, so it's economic benefit was higher and more stable t han R-W-S. The R-C-M-S created the highest economic benefit owing to fully use of the time and space, but it's labor costs were the highest among the three planting patterns.4. The waste substrates of R-W-S were the closest to the commercial substrates among the three planting patterns, so they can be used to rice seeding next year. The waste substrates of R-C-S reused to rice seeding directly was not recommended. The rice seeding which reused by waste substrates of R-C-M-S grew poorly and couldn't be transplanted. On the other hand, the waste substrates of R-C-M-S could be added as a supplement to commercial substrates.