Ethephon could reduce plant height,moving frequency of turf,increase the resistance and tillers of turfgrass,and improve turfgrass color,thereby improve turf quality and reduce maintenance expenditure.

The base learner which has the strongest ability to improve the diversity of other base learners in the base learner set is chosen and deleted,and hierarchical pruning is used to speed up the new algorithm.

This paper proposes a language model compression method which combined the count cutoff and the pruning method to reduce the size of the language model and uses grouping to compress this model without cell reduction.